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Articles 31 - 41 of 41
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Passages, Volume 10, No. 2, Summer 2009, Joe Mitchell
Passages, Volume 10, No. 2, Summer 2009, Joe Mitchell
Texas Cave Management Association
Contents: TCMA: Cavers Protecting Caves -- View from the Palit -- Deep & Punkin Caves: Two Texas Classics -- TCMA -- Ezell's Cave: Home of the Blind Monster -- Godwin Ranch: Habitat for Endangered Species -- Rolling Oaks: A Small Preserve Protecting Small Creatures -- Robber Baron: History, Mystery, and Restoration -- Deep and Punkin Cave Survey Update -- LIDAR Mapping the Devil's Sinkhole -- Linda Palit: Highlights from a Lifetime of Caving -- LIDAR -- A Geology Field Trip to Deep & Punkin Caves -- RBC -- Whirlpool Preserve -- Lost Oasis Preserve -- TCMA Supports the 15th ICS …
Environmental Flows In The Rocky Mountain West: A Progress Report, Lawrence J. Macdonnell
Environmental Flows In The Rocky Mountain West: A Progress Report, Lawrence J. Macdonnell
Law of the Rio Chama
No abstract provided.
Geochemistry Of The Middle Miocene Collision-Related Yamadaği ( Eastern Anatolia) Calc-Alkaline Volcanics, Turkey, Taner Eki̇ci̇, Musa Alpaslan, Osman Parlak, Ali̇ Uçurum
Geochemistry Of The Middle Miocene Collision-Related Yamadaği ( Eastern Anatolia) Calc-Alkaline Volcanics, Turkey, Taner Eki̇ci̇, Musa Alpaslan, Osman Parlak, Ali̇ Uçurum
Turkish Journal of Earth Sciences
Major, trace element and K-Ar age determinations are reported for a suite from the Yamadağı volcanics in the Eastern Anatolia. The exposed rocks mainly consist of medium-potassium calc-alkaline basaltic andesites, andesites and dacites. Petrographical data exhibit disequilibrium mineral textures, such as resorption of the ferromagnesian phases, clinopyroxene-mantled orthopyroxene, and sieve-textured plagioclases. The Yamadağı volcanics have a calk-alkaline character, and trace element characteristics exhibit that the volcanics resemble subduction zone volcanics and/or volcanics assimilated by continental crust. K/Ar age determinations show that the Yamadağı volcanics were formed during the 12 ± 0.5 - 15 ± 0.5 Ma time interval. Geochemical characteristics …
Arkosic Rocks From The San Andreas Fault Observatory At Depth (Safod) Borehole, Central California: Implications For The Structure And Tectonics Of The San Andreas Fault Zone, S. D. Springer, James P. Evans, J. I. Garver, D. Kirschner, Susanne U. Janecke
Arkosic Rocks From The San Andreas Fault Observatory At Depth (Safod) Borehole, Central California: Implications For The Structure And Tectonics Of The San Andreas Fault Zone, S. D. Springer, James P. Evans, J. I. Garver, D. Kirschner, Susanne U. Janecke
Geosciences Faculty Publications
The San Andreas Fault Observatory at Depth (SAFOD) drill hole encountered indurated, high-seismic-velocity arkosic sedimentary rocks west of the active trace of the San Andreas fault in central California. The arkosic rocks are juxtaposed against granitic rocks of the Salinian block to the southwest and against fine-grained Great Valley Group and Jurassic Franciscan rocks to the northeast. We identify three distinct lithologic units using cuttings, core petrography, electrical resistivity image logs, zircon fission-track analyses, and borehole-based geophysical logs. The upper arkose occurs from 1920 to 2530 m measured depth (mmd) in the borehole and is composed of five structural blocks …
A Legal Regime For The Mining Of Helium-3 On The Moon: U.S. Policy Options, Richard B. Bilder
A Legal Regime For The Mining Of Helium-3 On The Moon: U.S. Policy Options, Richard B. Bilder
Fordham International Law Journal
Absent an agreed international legal framework, attempts by the United States or any other nation or private entity to acquire and bring to Earth significant quantities of He-3 could give rise to controversy and conflict. Consequently, it seems timely to revisit the issue of the legal regime potentially applicable to exploiting He-3 and other lunar resources. Part I of this Article will briefly discuss the technical and economic prospects for the develop of He-3-based fusion energy. Part II lays out the present legal situation concerning the exploitation of lunar resources such as He-3. Part III analyzes whether it is prudent …
Temporal And Geochemical Insights Related To Volcanic And Plutonic Activity Within Big Bend National Park, Texas, Daniel Paul Miggins
Temporal And Geochemical Insights Related To Volcanic And Plutonic Activity Within Big Bend National Park, Texas, Daniel Paul Miggins
Open Access Theses & Dissertations
Big Bend National Park located in the southeastern part of the Trans-Pecos Magmatic Province in west Texas contains a diverse suite of volcanic and intrusive rocks. Ongoing geologic mapping, geochronology, and geochemical studies have focused on the timing and geological relationships associated with these volcanic and intrusive rocks. Igneous activity within Big Bend National Park occurred from 46.5 to 22.0 Ma. Precise 40Ar/39Ar and U-Pb zircon geochronology has resolved the timing of this activity into five discrete episodes: 1) eruption and emplacement of both intrusive and volcanic mafic rocks at 46.5 Ma followed by ~42.0 Ma mafic volcanic pulse; 2) …
Environmental Flows In The Rocky Mountain West: A Progress Report, Lawrence J. Macdonnell
Environmental Flows In The Rocky Mountain West: A Progress Report, Lawrence J. Macdonnell
Wyoming Law Review
No abstract provided.
The Palaeoceanography Of The Leeuwin Current : Implications For A Future World, Karl-Heinz Wyrwoll, Benjamin J. Greenstein, George Kendrick
The Palaeoceanography Of The Leeuwin Current : Implications For A Future World, Karl-Heinz Wyrwoll, Benjamin J. Greenstein, George Kendrick
Arts & Sciences Faculty Publications
Long-term progressive changes of the Leeuwin Current are linked to plate and ocean basin ‘geography’ and Cenozoic global climates and palaeoceanography. Suggestions of the presence of a proto-Leeuwin Current as early as late Middle to Late Eocene times (c. 35–42 Ma) cannot be verified by the fossil record of the western margin of Australia. “Leeuwin Current style” circulation around Australia was certainly established by the early Oligocene, in response to palaeogeographic changes in the Tasman Strait. This, followed by tectonic eorganisation of the Indonesian Archipelago throughout the Miocene, provided a palaeogeographic setting, which by the Pliocene was essentially that of …
Why Resilience May Not Always Be A Good Thing: Lessons In Ecosystem Restoration From Glen Canyon And The Everglades, Sandra B. Zellmer, Lance Gunderson
Why Resilience May Not Always Be A Good Thing: Lessons In Ecosystem Restoration From Glen Canyon And The Everglades, Sandra B. Zellmer, Lance Gunderson
Faculty Law Review Articles
No abstract provided.
Faculty Publications And Creative Works 2009, Office Of The Vice President For Research
Faculty Publications And Creative Works 2009, Office Of The Vice President For Research
Office of the Vice President for Research
Faculty Publications & Creative Works is an annual compendium of scholarly and creative activities of University of New Mexico faculty during the noted calendar year. It serves to illustrate the robust and active intellectual pursuits conducted by the faculty in support of teaching and research at UNM.
Ceramics Of Mayapan, Fortoul Carmen Giomar Sanchez
Ceramics Of Mayapan, Fortoul Carmen Giomar Sanchez
Electronic Theses and Dissertations 2000 - 2009
The unimpressive archaeological record of the last Mayan pre-Hispanic period has been traditionally interpreted as one of a society in decadence. However, archaeological remains evidencing stylistic homogenization across regions and documentary accounts written during the conquest describing thriving markets and entrepreneurial people have indicated to some a mercantile society linked by extensive networks of communication. Under the weaker political environment of this period, it is expected that a mercantile environment presented more competition and more ceramic producers. This research used petrographic analysis and XRD of the pottery of Mayapan the last Maya capital, to detect ceramic compositional groups, which research …