Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Geophysics and Seismology (75)
- Hydrology (34)
- Engineering (20)
- Geochemistry (16)
- Sedimentology (14)
-
- Chemical Engineering (10)
- Petroleum Engineering (10)
- Geomorphology (9)
- Environmental Sciences (6)
- Glaciology (6)
- Stratigraphy (6)
- Architecture (5)
- Geological Engineering (5)
- Social and Behavioral Sciences (5)
- Life Sciences (4)
- Architectural Technology (3)
- Arts and Humanities (3)
- Civil and Environmental Engineering (3)
- Geography (3)
- Ecology and Evolutionary Biology (2)
- Education (2)
- Environmental Engineering (2)
- Geotechnical Engineering (2)
- Landscape Architecture (2)
- Medicine and Health Sciences (2)
- Metaphysics (2)
- Mineral Physics (2)
- Institution
- Keyword
-
- Geology (33)
- Michigan (8)
- Geophysics (7)
- Sedimentology (6)
- Stratigraphy (6)
-
- Geochemistry (5)
- Stratigraphic (5)
- Dolomite (4)
- Foraminifera (4)
- Hydrology (4)
- Stratigraphic -- Mississippian (4)
- Sulfide (4)
- Carbonates (3)
- Finite element analysis (3)
- Hydrogeology (3)
- Modeling (3)
- Petrology (3)
- Seismic (3)
- Sequence stratigraphy (3)
- Tuff (3)
- Carbonate (2)
- Characterization (2)
- Contamination (2)
- Depositional model (2)
- Diagenesis (2)
- Erosion (2)
- Fluid flow (2)
- Fossil -- ClassificationForaminifera (2)
- Geology -- Missouri -- Washington CountyGeology (2)
- Geology -- MissouriGeology (2)
Articles 421 - 450 of 473
Full-Text Articles in Geology
Ground Water Investigation In The Southern Half Of Franklin County, Missouri, Kemal Piskin
Ground Water Investigation In The Southern Half Of Franklin County, Missouri, Kemal Piskin
Masters Theses
"Increasing population and industrialization in Franklin County, Missouri, has led to increased demand for water. Much of this demand will be satisfied from ground water resources. Although the general geology of Franklin County has been mentioned in several publications, no detailed study of structure and ground water geology had been done. This thesis consists of study of stratigraphy, lithology, and geologic structure, and analysis of well log data to determine occurrence and availability of ground water, in the southern half of Franklin County.
Stratigraphy and lithology is compiled from previous literature, modified to agree with well log data. Structural geology …
Stylolites And Sedimentary Structures In The Cave-In-Rock Fluorspar District, Southern Illinois, Won Choon Park
Stylolites And Sedimentary Structures In The Cave-In-Rock Fluorspar District, Southern Illinois, Won Choon Park
Masters Theses
"This thesis deals with stylolites, slump structures, sulfides in the oolitic limestone, and geometry of the bedded fluorite deposits in the Cave-In-Rock fluorspar district, southern Illinois. Stratigraphic zones studied were: 1) the upper part of the lower Fredonia limestone member, 2) the upper part of the upper Fredonia limestone member,,and 3) the upper part of the Renault formation.
Geometry of the ore rocks and related structures was investigated. Most of the ore is layered and constitutes part of the sedimentary strata.
Slump structures were observed and studied in detail. Most of the slump structures show evidence which indicates a sedimentary …
A Study Of Placer Tin Materials From Southern Thailand, Somkiat Ganthavee
A Study Of Placer Tin Materials From Southern Thailand, Somkiat Ganthavee
Masters Theses
"This thesis deals with a series of investigations of placer tin samples from a Chinteik's Tin-dredge, Gnaw District, Ranong Province, and the Tin-Pet mine, Phang-gna Province, in southern Thailand.
A brief summary of the geography and geology of Thailand as a whole has been given as a general introduction to the source of the materials studied in this thesis.
The results of sieve analyses have shown that the sluice boxes do not effectively concentrate the cassiterite grain below 0.147 mm. from the rough concentrate treated in the tin-dressing shed.
It has been found that roundness and shape determinations of quartz …
Sedimentary Features And Geochemistry Of The Sulphide Facies In The Transition Between The Lamotte Sandstone And The Bonneterre Formation In The Fredericktown Area, Madison County, Missouri, Farouk El Baz
Masters Theses
"SCOPE AND PURPOSE The Lead Belt area of southeast Missouri, which is nearly 40 km. long and 10 km. wide, is considered, at the present time, the most important lead district in the world. Lead has been mined in this area by the natives prior to 1720, and almost continuously up to the present day. A variety of sulphides are mined from different places in the district.
The sulphide deposits in the Lead Belt are considered to be typical examples of the Mississippi Valley Type Deposits, which are distributed all over the world. As in practically all the Mississippi Valley …
Geology Of The East-Central Portion Of The Nelson Quadrangle, Clark County, Nevada, Tedral Kantor
Geology Of The East-Central Portion Of The Nelson Quadrangle, Clark County, Nevada, Tedral Kantor
Masters Theses
"The purpose of this investigation was to determine the unusually complex geology of a little-known area south of the Eldorado mining district, southern Clark County, Nevada. The area, mapped at a scale of 1:24000, comprises a segment of the northerly-trending Eldorado mountains in the southeast corner of the Great Basin. This rugged desert area is on a drainage divide between the Great Basin and the Colorado River. The rocks of the area consist of Precambrian gneisses and schists invaded by successive generations of Upper Cretaceous (?) - Tertiary igneous rocks. The older rocks, mainly biotite-chlorite gneisses, have resulted from high-grade …
Certain Features Of Alteration In The Michigan Lavas And Their Genetic Interpretation, Peethambaram Doraibabu
Certain Features Of Alteration In The Michigan Lavas And Their Genetic Interpretation, Peethambaram Doraibabu
Masters Theses
"The origin of the alteration and copper mineralization in the Keweenawan lavas of the Upper Peninsula of Michigan is one of the well known controversial topics in Economic Geology. The literature on this problem is most extensive and an attempt was made in this thesis to first review as many aspects of the discussion as appeared to be necessary. This portion is necessarily extensive, and it is hoped that some new light has been thrown here on some patterns of approach or thought which, today, can hardly be called scientific.
Next, the observations made in the field, on hand specimens …
Certain Trace Element Distribution In The Searchlight, Nevada Quartz Monzonite, Clark County, Nevada, Jai Nandan Shrivastava
Certain Trace Element Distribution In The Searchlight, Nevada Quartz Monzonite, Clark County, Nevada, Jai Nandan Shrivastava
Masters Theses
"The once prosperous gold, silver, copper and lead mines of the Searchlight mining district, Nevada, are situated along the south and western margins of a large quartz monzonite body. This intrudes the Precambrian gneisses and younger lava flows. Associated mineral veins show an eccentric type of zoning around the intrusive.
Seven rock samples of the quartz monzonite representing different parts of the intrusive were analyzed petrographically and spectrographically. Modal analyses and various types of rock alteration were investigated petrographically. Spectrochemical analyses of the rock samples and their major minerals were carried out for certain trace elements. A semi-quantitative method was …
Cyclic Sedimentation Of The Upper Fayetteville Formation, Faramarz Frouzan
Cyclic Sedimentation Of The Upper Fayetteville Formation, Faramarz Frouzan
Masters Theses
"In the past decade considerable interest has developed in the geology of the Boston Mountain area of northern Arkansas. This has been due to exploration for oil and gas in-the area and the related desire to know more about the structure and stratigraphy of the region. Principal work has been done by the University of Arkansas, the United States Geological Survey, and oil companies. This study involves only one of the formations making up the geologic column in the Boston Mountains, the Upper Mississippian (Chesterian Series) Fayetteville Formation.
Portions of the upper part of the Fayetteville Formation of northwestern Arkansas …
Mississippian Bioherms Of Southwestern Missouri And Northwestern Arkansas, Arthur R. Troell Jr.
Mississippian Bioherms Of Southwestern Missouri And Northwestern Arkansas, Arthur R. Troell Jr.
Masters Theses
"Lenticular bodies of massive limestone, flanked by thin crinoidal beds, crop out in southwestern Missouri and northwestern Arkansas. They are within the St. Joe limestone of the Lower Mississippian.
Strata underlying these bodies typically are down-warped, those on the flanks lapping against, finally passing completely over the limestone core. Dips away from the “reef” are commonly around 5 degrees, but reach as much as 30 degrees. Conglomeratic detritus, originating from the core, occurs in flanking beds at their contact with it.
Thin sections of these masses show no more than 15 per cent of the limestone to consist of fossil …
Comparative Petrographic, Petrochemical And Spectrographic Analyses Of The Precambrian Granitic Rocks Of Southeastern Missouri, Eva B. Kisvarsanyi
Comparative Petrographic, Petrochemical And Spectrographic Analyses Of The Precambrian Granitic Rocks Of Southeastern Missouri, Eva B. Kisvarsanyi
Masters Theses
"Petrographic, petrochemical and spectrographic studies were completed on selected Precambrian granitic rock samples from Southeastern Missouri. This investigation contributes to a more detailed knowledge of the Precambrian granitic rocks of this part of the state.
Petrographic analysis of forty-four thin sections of granitic rocks from the St. Francois Mountains area revealed six different granite types. These have been named the Fredericktown, Knoblick, Doerun, Graniteville, Klondike and Silvermine granites. These rocks form a large part of a composite batholith. More than one period of granitic intrusion is represented, but differentiation also contributed to the formation of this diversity of the rocks. …
Occurrence Of Mineralized Ground Water In Southern St. Louis And Jefferson Counties, Missouri, Willard Glennon Owens
Occurrence Of Mineralized Ground Water In Southern St. Louis And Jefferson Counties, Missouri, Willard Glennon Owens
Masters Theses
"Mineralized ground water occurs at some localities in southeastern St. Louis and northern Jefferson counties, Missouri. This water is usually undesirable and is detrimental to development of ground water resources.
Water well records in the offices of the Missouri Geological Survey and Water Resources provided data for a study of structure, lithology and occurrence of ground water. Water well drillers and property owners were interviewed to obtain additional information concerning drilling problems and quality of water.
Geologic cross-sections, subsurface contour maps and isochlorinity maps aided the study of lithology, structure and areal distribution of mineralized ground water. Relationship is suggested …
A Review Of Fossilization Processes In Different Sedimentary Environments (With Special Reference To The Time Factor Of Deposition Of Ore Minerals Associated With Fossil Material, In Particular The Coprolitic Phosphate Deposits), Giovanna Reggiori Ligasacchi
A Review Of Fossilization Processes In Different Sedimentary Environments (With Special Reference To The Time Factor Of Deposition Of Ore Minerals Associated With Fossil Material, In Particular The Coprolitic Phosphate Deposits), Giovanna Reggiori Ligasacchi
Masters Theses
"This thesis offers a cross/section through some principal fossilization processes involving organic matter (animals and plants) during and after sedimentation. The influence of different environments during fossilization is considered. The chemical composition of some classes of living invertebrates and plants is compared with the chemical composition of same organisms as found in consolidated sediments as fossils.
Some literature on carbonates, oxides, silicates, phosphates, and sulphides in fossils is reviewed with particular attention to those instances where the fossils are associated with ore minerals. Special consideration is given to the occurrence and composition of fecal matter in recent and consolidated sediments. …
A Study Of The Genesis Of The Krueger Zinc Deposit And The Near-By Barite Deposits Of The Potosi Quadrangle, Washington County, Missouri, Attilio Ligasacchi
A Study Of The Genesis Of The Krueger Zinc Deposit And The Near-By Barite Deposits Of The Potosi Quadrangle, Washington County, Missouri, Attilio Ligasacchi
Masters Theses
This thesis deals with the study of the genesis of the Krueger zinc deposit and the near-by barite deposits of the Potosi quadrangle, Washington County, Missouri.
The rocks outcropping in the quadrangle embrace Pre-Cambrian and Lower Paleozoic formations, the Potosi and Eminence being the most important formations with regard to the studied deposits.
The few structures present in the area of the vertical type and are more abundant in the southern part of the quadrangle.
Special emphasis is placed on the relationships between the barite, the associated sulfides, and the host rock.
Geometric and geochemical criteria are studied in detail …
Geology Of The Northeast Portion Of Des Arc Quadrangle, Iron And Madison Counties, Missouri, Wesley Dean Weixelman
Geology Of The Northeast Portion Of Des Arc Quadrangle, Iron And Madison Counties, Missouri, Wesley Dean Weixelman
Masters Theses
"A geological investigation of the northeast portion of Des Arc Quadrangle in southeast Missouri was completed during the summer of 1958. Exposed Precambrian rocks include, from oldest to youngest, undifferentiated purple rhyolites with an interlayered tile-red rhyolite, andesine basalts with interlayered tuff, and an andesite. A diabase dike intrudes the lower purple rhyolites. The purple rhyolites account for about ninety-seven percent of the Precambrian exposures. Exposed Paleozoic rocks belong to the Bonneterre formation and include three members: (1) Lower Brown dolomite; (2) Light Gray dolomite with Tom Sauk limestone and arkosic sandstone and conglomerate facies; and (3) Upper Brown dolomite. …
Geology Of The Copper Deposits In The Eminence Region, Shannon County, Missouri, Lanny Lee Evans
Geology Of The Copper Deposits In The Eminence Region, Shannon County, Missouri, Lanny Lee Evans
Masters Theses
"Copper has been known to occur in Shannon County, Missouri since the early 1830's. A number of small deposits in an area around Eminence has been worked intermittently up to the present day. Little detailed geologic information is available on these deposits. The geology of the Eminence region consists of Precambrian rhyolite porphyry knobs projecting through dolomites and sandstones of Upper Cambrian and Ordovician age. A conglomerate of limited horizontal extent overlying the Precambrian is found at certain localities within the region. The only structures noted are the structural highs formed where the Paleozoic sediments lap upon the knobs. The …
Geology Of The Annapolis Area, Iron County, Missouri, Richard A. Zimmermann
Geology Of The Annapolis Area, Iron County, Missouri, Richard A. Zimmermann
Masters Theses
"The objectives of this investigation include the following: (1) to map the distribution of the igneous and sedimentary rocks, (2) to investigate the structure and lithology of these rocks and to determine their sequence, (3) to determine the stratigraphic position of the sedimentary rocks relative to known Missouri formations, (4) to determine the igneous rock types, and (5) to investigate the distribution and occurrences of economic minerals"--Purpose of Investigation, Page 6.
The Geology Of The Uranium-Vanadium Deposit Of The Diamond No. 2 Mine, Near Gallup, New Mexico, Raymundo J. Chico
The Geology Of The Uranium-Vanadium Deposit Of The Diamond No. 2 Mine, Near Gallup, New Mexico, Raymundo J. Chico
Masters Theses
"This thesis deals with the geology of the Diamond No. 2 Mine east of Gallup, New Mexico. The sedimentary rocks ranging from Triassic to Cretaceous are described in relation to the local stratigraphic setting.
The Dakota formation is the host rock of the ore deposit, and was therefore studied in detail with regard to its petrographic nature and the sedimentary structures such as slumping. Special emphasis is placed on the study of the relationships between the uranium and vanadium deposit and the host rock. Geometrical and geochemical criteria are offered in order to explain the local genesis of the ore …
Detection Of Buried Basement Highs By Airphoto Drainage Pattern Analysis, Reynolds And Wayne Counties, Missouri, Papken Aram Zarzavatjian
Detection Of Buried Basement Highs By Airphoto Drainage Pattern Analysis, Reynolds And Wayne Counties, Missouri, Papken Aram Zarzavatjian
Masters Theses
"Purpose and Scope: The purpose of this study is to determine if it is possible to detect buried Precambrian igneous hills in Wayne County and the larger part of Reynolds County in southeast Missouri by the use of aerial photo drainage pattern analysis.
The St. Francis Mountains are located in southeast Missouri. They form a part of the Precambrian basement complex, and have been exposed at the surface by the erosion of the lower Paleozoic sediments which covered them. Some of the hills which make up the St. Francis Mountains are exposed to a great degree, while others still have …
Paragenesis Of The Minerals In The Einstein Vein Madison County, Missouri, Robert P. Stevens
Paragenesis Of The Minerals In The Einstein Vein Madison County, Missouri, Robert P. Stevens
Masters Theses
"Selection of the Problem: The mineralogical problem of determining the paragenetic sequence of minerals in the Einstein vein, Madison County, Missouri, was suggested by Dr. O. R. Grawe, who previously had supervised a thesis by Joel Pomerene dealing with the geology of the area. Although considerable attention has been given to the mineralization along the vein, a specific study of the paragenetic relations has not been made. Paragenesis has, however, been discussed by others in papers dealing with the geology of the area. Such a study is extremely important in the establishment of a hypothesis of origin, and hence, an …
Permeability Study Of Algal Reef Beds Within The Bonneterre Formation, National Mine, St. Francois, Missouri, Bobbie L. Perry
Permeability Study Of Algal Reef Beds Within The Bonneterre Formation, National Mine, St. Francois, Missouri, Bobbie L. Perry
Masters Theses
"The Missouri "Lead Belt" comprises approximately 50 square miles, centering around the town of Flat River, in St. Francois County. Missouri. This district has been producing lead for more than 200 years, the total production being at least 8,000,000 tons of lead, valued at more than $1,000,000,000. For many years, the annual production of the district has been at least one-fourth of the total production in the United States.
An excellent description of the geology of this area was published recently by Ohle and Brown in 1954.
The ore consists principally of galena which is disseminated within the Bonneterre formation …
The Phosphoria Formation Of The Northeastern Big Horn Basin, Wyoming, William A. Beatty
The Phosphoria Formation Of The Northeastern Big Horn Basin, Wyoming, William A. Beatty
Masters Theses
"Purpose and Scope. — The Phosphoria formation of the northern Rocky Mountains of the United States has received considerable attention from geologists because of its important reserves of phosphate and petroleum. In the Big Horn Basin of Wyoming, however, still more work is needed to compile the information necessary for a complete understanding of the facies changes exhibited by this formation.
The purpose of this paper is two-fold: first to present a description of the lithology and the paleontology of the Phosphoria formation in the northeast part of the Big Horn Basin, and secondly to show the stratigraphic relationship of …
A Geological Study Of The Irvine Ranch Area, Johnson And Campbell Counties, Wyoming, Gale E. Butterfield
A Geological Study Of The Irvine Ranch Area, Johnson And Campbell Counties, Wyoming, Gale E. Butterfield
Masters Theses
"The discovery of uranium in the Powder River Basin, Wyoming, by the U. S. Geological Survey in 1952 has lead to an extensive exploration program throughout the region by both private and governmental agencies. This report is a geological study of an area in the southwestern part of the basin.
Geological and radiometric mapping carried out as a part of this report indicated several areas of uranium occurrence. Some of these occurrences warrant tests by drilling.
Mineralogical and petrographic study has shown the principal uranium minerals to be carnotite and metatyuyamunite. The mineralization occurs in arkosic sandstones. Assays of the …
Geology Of The Northwest Quarter Of The Washington Quadrangle, Missouri, James Anthony Martin
Geology Of The Northwest Quarter Of The Washington Quadrangle, Missouri, James Anthony Martin
Masters Theses
"This report presents the results of detailed mapping of the geology of the northwest quarter of the Washington Quadrangle, Missouri. Extensive mapping and stratigraphic work have been done in St. Louis and St. Charles Counties to the east and in Callaway and Boone Counties to the west. These two well studied areas are separated by approximately 45 miles. This study adds geologic information to the area immediately between the above locations. In this area a gentle regional dip to the north permits a study of sediments ranging in age from lower Ordovician in the south to late Paleozoic and Pleistocene …
Geothermometry At The Balmat No. 2 Mine, New York By The Fes-Zns System, Bruce R. Doe
Geothermometry At The Balmat No. 2 Mine, New York By The Fes-Zns System, Bruce R. Doe
Masters Theses
"Definition Of The Study. The study consists of an investigation of the variation in the temperature of formation of sphalerite on the 500 and 1500 ft levels of the Balmat zinc deposit at Balmat, New York. A subsidiary investigation was performed on the use of x-ray fluorescence as a means of chemical quantitative analysis. Twelve samples of sphalerite from the 500 ft level and 13 samples from the 1500 ft level were analyzed for atomic percent iron content by measuring Zn/Fe x-ray fluorescent ratios. The x-ray fluorescent ratios were standardized by ''wet" quantitative analysis. The results of the analyses are …
Pre-Cambrian Geology Of Washington County Area, Missouri, Gordon Blair French
Pre-Cambrian Geology Of Washington County Area, Missouri, Gordon Blair French
Masters Theses
"The Problem.
Washington County, Missouri contains a limited number of outcrops of pre-Cambrian igneous rocks, the majority of which are in the extreme southern part of the county. The known association of lead ore with buried or partially buried pre-Cambrian igneous knobs and ridges in this part of Missouri has led the St. Joseph Lead Company to prospect in areas known to contain these features. In its exploration program, the St. Joseph Lead Company has drilled a number of prospect holes which have encountered other occurrences of pre-Cambrian igneous rocks within the limits of Washington County. This drilling, correlated with …
Morphology And Systematic Position Of Some Anomalinid Foraminifera, Billy G. Deaver
Morphology And Systematic Position Of Some Anomalinid Foraminifera, Billy G. Deaver
Masters Theses
"Morphological studies of the following species are the basis for a partial revision of the Family Anomalinadae: Anomalina acuta Plummer, A. midwayensis (Plummer), A. pseudopapillosa Carsey, A. vulgaris (Plummer), Anomalinoides pinguis (Jennings), Cibicides alleni (Plummer), C. beaumontianus (d’Orbigny), c. harperi (Sandidge), Cibicidina danvillensis (Howe and Wallace), Planulina correcta (Carsey), and P. dumblei (Applin); a description of Stensioina americana Cushman and Dorsey, discorbid foraminifer, is included for comparison. The classificatory position and incomplete content of the family are: Superfamily Discorbidea; Family Anomalinidae; Subfamily Anomalininae (revised) -- with ventral supplementary apertures: Anomalina , Planulina ; Subfamily Cibicidinae -- with dorsal supplementary apertures: …
Geology Of The South Half Of The Meramec Spring Quadrangle, Missouri, Howard Joseph Yorston
Geology Of The South Half Of The Meramec Spring Quadrangle, Missouri, Howard Joseph Yorston
Masters Theses
"This report is a continuation of the work initiated by Mueller in his mapping of the north half of the Meramec Spring Quadrangle. The completion of this work provides not only a geologic map of the whole quadrangle but also completes the mapping of the geology of a strip of quadrangles extending from Rolla to the Mississippi River. In addition to being a step closer to the goal of complete geologic coverage for the state, this work will be of value to those concerned with the prediction of depths of wells drilled in search for water, which in view of …
Foraminifera Of The Type Section Of The Archusa Marl Of Mississippi (Eocene, Claiborne Group, Wautubbee Formation), Nathan Eugene Crockett
Foraminifera Of The Type Section Of The Archusa Marl Of Mississippi (Eocene, Claiborne Group, Wautubbee Formation), Nathan Eugene Crockett
Masters Theses
"The type locality of the Archusa marl member of the Wautubbee formation is situated south of Quitman, Clarke County, Mississippi. Stratigraphically, the unit falls within the middle Eocene Claiborne group, being roughly equivalent to the upper part of the Lisbon formation of Alabama and the lower part of the Cook Mountain. The marl falls within the Ostrea sellaefonnis zone and the zone of "Ceratobulimina eximia.” The type section consists of 48 feet of sandy marls, with a thin oyster bed near the middle.
The Archusa foraminifera fauna consists of 87 species and varieties, belonging to 49 genera and …
The Mineralogy Of The Grassy Creek And Saverton Formations, Dirk Pieter Van Duym
The Mineralogy Of The Grassy Creek And Saverton Formations, Dirk Pieter Van Duym
Masters Theses
"A study of the mineralogy of the Grassy Creek and Saverton formations of Northeast Missouri was undertaken to determine whether a division is justified, as proposed by some stratigraphers, of these argillaceous beds into two formations. The formations were sampled systematically at surface exposures on the northeast limb of the Lincoln Arch in the vicinity of Hannibal and Louisiana, Missouri. The samples were investigated mineralogically in the laboratory. Previous studies showed that the fossils of the Grassy Creek and Saverton beds were virtually identical. The present study demonstrates that the Grassy Creek and Saverton beds are too near alike in …
A Study Of Immiscibility In The Carbonates From The Metamorphic Rocks Of Southeastern Vermont, Ralph D. Cotter
A Study Of Immiscibility In The Carbonates From The Metamorphic Rocks Of Southeastern Vermont, Ralph D. Cotter
Masters Theses
"This problem is an attempt to correlate grade of metamorphism (normally assumed to be temperature dependent) with the shape and dimensions of a solid miscibility gap. Such a correlation might permit mapping of a continuously variable function of metamorphism. The system, calcite and dolomite-ankerite, was chosen for study because of its relative simplicity. Samples of quartz-carbonate granulite were collected from the Waits River formation in southeastern Vermont through a range of metamorphic grades. Refractive index, "molecular" volume, manganese content, and density were determined for the carbonates of four of these samples. These values are plotted on a compositional diagram to …