Derivative maps generated from DEM's and panchromatic remote sensing data (TM Landsat 7 or SPOT) can be used to characterize surficial basin deposits in arid regions dominated by basin and range topography. Results indicate the technique is useful for rapid digital mapping of surficial deposits where a first order, systematic subdivision of bedrock, alluvial fan units, and playas is unavailable...

To constrain the timing of rifting in the western, eastern, and northern parts of the Alboran Sea basin, seismic reflectors, corresponding to biostratigraphic boundaries and unconformities from the Miocene to Recent, are correlated using synthetic seismograms. Regions of adjacent coeval compression and extension are found in the Alboran Sea basin. Normal faulting continues in parts of the easte...

Study of Landsat imagery prompted Cannon (1) to suggest that Sithylemenkat Lake in central Alaska occupies a meteorite impact crater. In support of his thesis, he cites physiographic, structural, geochemical, and aeromagnetic evidence from various published sources. We believe, on the basis of our previous work in the area (2-4), that Cannon has largely misinterpreted these published data, whic...

a State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, Hubei, 430074, PR China b State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei, 430074, PR China c Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013, USA d Department Geology and Geophysics, Yale University,...

Proposed withdrawal of groundwater from the surficial aquifer system confined zone, or the upper and lower Brunswick aquifers in eastern Camden County, Georgia, could result in drawdown extending beneath the Cumberland Sound and potentially could affect groundwater levels and natural resources at Cumberland Island National Seashore. Using a nonequilibrium formula, estimated drawdown after 5 yea...

A combination of geologic descriptions of cores, borehole geophysics, surfacegeophysical soundings and water-sample analyses was used to characterize flow in the surficial aquifer in the vicinity of Big Cypress National Preserve, Collier County, south Florida. The geophysical analysis augmented by aquifer tests and piezometer measurements showed that the surficial aquifer is under unconfined co...

DA-YONG JIANG, RYOSUKE MOTANI, WEI-CHENG HAO, OLIVIER RIEPPEL, YUAN-LIN SUN, LARS SCHMITZ, and ZUO-YU SUN Department of Geology and Geological Museum, Peking University, Beijing 100871, P. R. China, [email protected]; Department of Geology, University of California, Davis, California 95616-8605, U.S.A; Department of Geology, The Field Museum, Chicago, Illinois 60605-2496, U.S.A., rieppel@fieldm...

Karst Research Institute ZRC SAZU, Postojna, Slovenia b Scott Polar Research Institute, Department of Geography, University of Cambridge, Cambridge, UK Department of Geology, University Centre in Svalbard, Longyearbyen, Norway University of Texas Institute for Geophysics, Austin, TX, USA Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN, USA Department of Geology an...

Nearly 25% of all lakes on earth are located at high latitudes. These formed by a combination thermokarst, glacial, and geological processes. Evidence suggests that the origin periglacial lake formation may be an important factor controlling likelihood to drain. However, geospatial data regarding spatial distribution these dominant Arctic subarctic limited or do not exist. Here, we use lake-spe...

In the second revised edition of this widely used textbook, practical aspects are given particular emphasis. Two new chapters have been added-one on geology in engineering, another summarizing the subject matter of physical geology and explaining its relation to earth history. The chapter on geology in engineering, and those on minerals and mineral deposits, offer especially good material for a...