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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
A 70 Year History Of Coastal Dune Migration And Beach Erosion Along The Southern Shore Of Lake Michigan, Zoran Kilibarda, Craig Shillinglaw
A 70 Year History Of Coastal Dune Migration And Beach Erosion Along The Southern Shore Of Lake Michigan, Zoran Kilibarda, Craig Shillinglaw
Zoran Kilibarda
A study of aerial photographs from the Indiana Dunes National Lakeshore (adjacent to Michigan City, Indiana, United States of America) revealed that from 1938 to 2008 the Lakeshore’s Mount Baldy dune advanced inland 135 m, at an average rate of 1.9 m/year, while the beach north of the dune receded 98 m, at an average rate of 1.4 m/year. The highest rates of Mount Baldy dune movement (3.3 m/year) occurred concurrently (1965–1973) with highest rates of beach erosion (7.2 m/year). The lowest rates of Mount Baldy dune movement (0.3 m/year) occurred in 1958–1965 period. The highest rates of beach accretion …
Changes In Beach Gravel Lithology Caused By Anthropogenic Activities Along The Southern Coast Of Lake Michigan, Usa, Zoran Kilibarda, Nolan Graves, Melissa Dorton, Richard Dorton
Changes In Beach Gravel Lithology Caused By Anthropogenic Activities Along The Southern Coast Of Lake Michigan, Usa, Zoran Kilibarda, Nolan Graves, Melissa Dorton, Richard Dorton
Zoran Kilibarda
The southern coast of Lake Michigan is the most urbanized and most densely populated area in the Great Lakes region. Development of steel mills, harbors, and municipalities in NW Indiana and in NE Illinois in the last century and a half altered the nearshore environment so much that native beach gravel (>8 mm) now exist only in the exhumed paleo-beach remnants from the Nipissing Phase (~4,500 years ago) of Lake Michigan. Native gravel, collected from paleo-beach remnants at Mount Baldy Dune and Beach House Blowout, contain predominantly beach shingle, very platy siltstones (71–78 %), with secondary crystalline pebbles (18 …
The Role Of Extratropical Cyclones In Shaping Dunes Along Southern And Southeastern Lake Michigan, Brian Yurk, Edward Hansen, Suzzanne Devries-Zimmerman, Zoran Kilibarda, Deanna Van Dijk, Brian Bodenbender, A. Krehel, T. Pennings
The Role Of Extratropical Cyclones In Shaping Dunes Along Southern And Southeastern Lake Michigan, Brian Yurk, Edward Hansen, Suzzanne Devries-Zimmerman, Zoran Kilibarda, Deanna Van Dijk, Brian Bodenbender, A. Krehel, T. Pennings
Zoran Kilibarda
This study investigates the impacts of extratropical cyclones on Lake Michigan dune complexes by integrating fi eld measurements and meteorological data from sites along the southeastern shore. Surface changes and wind velocities were monitored at Hoffmaster State Park, Saugatuck Harbor Natural Area, and Mount Baldy at Indiana Dunes National Lakeshore from October to April in 2010–2011 and 2011–2012. Over 70% of the events with wind speeds at least two standard deviations above the mean were associated with extratropical cyclones. The wind directions depended on the cyclone path, with westerly or southerly components most common. Local conditions moderated the effects of …
Morphology And Origin Of The Fair Oaks Dunes In Nw Indiana, Usa, Zoran Kilibarda, Joseph Blockland
Morphology And Origin Of The Fair Oaks Dunes In Nw Indiana, Usa, Zoran Kilibarda, Joseph Blockland
Zoran Kilibarda
The Fair Oaks Dunes (FOD) of NW Indiana, USA is a large (~4500 km2) inland dune field associated with the late Wisconsin deglaciation of the Laurentide Ice Sheet. Meltwaters released by the Michigan, Saginaw, and Huron–Erie lobes transported fluvioglacial sediment through the Kankakee and Tippecanoe Valleys and their tributaries. The texture and composition of the sand in the FOD suggest a Saginaw Lobe origin of sediment with some Huron–Erie Lobe sediment. Sub-mature sand with sub-angular grains and a large feldspar content suggests relatively short distance of transport during two or possibly three dune-building and dune reworking events. We propose a …
Sedimentary Setting Of Adriatic Flysch Formation (Middle Eocene-Middle Miocene), Southeastern Montenegro As Revealed By Turbidite Sequences., Zoran Kilibarda, Damjan Cadjenovic, Jelena Milutin, Novo Radulovic
Sedimentary Setting Of Adriatic Flysch Formation (Middle Eocene-Middle Miocene), Southeastern Montenegro As Revealed By Turbidite Sequences., Zoran Kilibarda, Damjan Cadjenovic, Jelena Milutin, Novo Radulovic
Zoran Kilibarda
A 750 m long outcrop of Middle Eocene-Miocene flysch is exposed in an asymmetrical syncline in Crnjak Cove, south of Bar, Montenegro. Texture, physical sedimentary structures, petrography, and trace fossil studied in these sediments allowed the recognition of turbidite facies that display various members of the Bouma sequence (Ta,b,c,d,e). These are interpreted in order to reconstruct the depositional setting of these gravitational deposits. Predominantly clastic lihologies in this 300 m thick sequence are arranged in seven distinct turbidite facies, which represent three superimposed submarine fans. The oldest fan consists of: 1) basal marl (T1: 0-30 m), which indicate basin to …
Assessing The Impact Of Geosciences Laboratories On Student Learning: Who Benefits From Introductory Labs, Karl Nelson, Kristin Huysken, Zoran Kilibarda
Assessing The Impact Of Geosciences Laboratories On Student Learning: Who Benefits From Introductory Labs, Karl Nelson, Kristin Huysken, Zoran Kilibarda
Zoran Kilibarda
Laboratories serve as an integral part of geoscience education at most colleges and universities. While anecdotal evidence supports the beneficial impact of laboratories on science class learning, little quantitative research backs this statement. This study compared classroom data from students who completed a geoscience laboratory in conjunction with an introductory-level lecture-based course to those who completed the lecture course only. Laboratory-enrolled students performed better in the lecture class, resulting in an increase of 5.5% in their final class score. Even after controlling for GPA, laboratory enrollment accounted for a statistically significant proportion of the variance. Nontraditional students (age 25 and …
Wind Deposition Of Mud Aggregates And Their Role In Development Of Lamellae In The Fair Oaks Dunes, Indiana, Zoran Kilibarda, Erin Argyilan, Joseph Blockland
Wind Deposition Of Mud Aggregates And Their Role In Development Of Lamellae In The Fair Oaks Dunes, Indiana, Zoran Kilibarda, Erin Argyilan, Joseph Blockland
Zoran Kilibarda
Three parabolic dunes from the Fair Oaks Dune field in northern Indiana were excavated, in order to study the properties and genesis of lamellae. Reddish lamellae with sharp upper boundaries and diffuse lower boundaries are intercalated with yellowish sand layers within the upper 3–5 m of each dune. The thicknesses of the lamellae decrease from N2 cm in the east (Winamac dune) to b0.3 cm in the west (Shelby dune). In deeper parts of the dunes lamellae were absent, but straight or slightly convex, clay rich depositional laminae were present. Thin sections of lamellae reveal thatmost of the clays are …
Late Triassic To Late Jurassic Evolution Of The Adriatic Carbonate Platform And Budva Basin, Southern Montenegro, Damjan Cadjenovic, Zoran Kilibarda, Novo Radulovic
Late Triassic To Late Jurassic Evolution Of The Adriatic Carbonate Platform And Budva Basin, Southern Montenegro, Damjan Cadjenovic, Zoran Kilibarda, Novo Radulovic
Zoran Kilibarda
Southeastern Montenegro is the only part of the Adriatic Carbonate Platform (AdCP) that bears record of its evolution from a ramp, through a distally steepened ramp to a platform. In this paper we present the sequence stratigraphy of the Late Triassic to Late Jurassic rocks from this part of Tethys for the first time in the literature.We discovered and described three new facies: hardground and cerebroid oolites of the Livari Supersequence, and black pebble conglomerate of the Tejani Supersequence. The mid-ramp and lower ramp cherty oolite, wackestone and mudstone facies of the Livari Supersequence, as well as Oolite Conglomerate facies …