Publications
Filter Total Items: 825
Potomac River Paleocene and Eocene stop descriptions
No abstract available.
Authors
Thomas G. Gibson, Laurel M. Bybell
Paleocene-Eocene boundary: Sedimentation in the Potomac River Valley, Virginia and Maryland: field trip guidebook
No abstract available.
Authors
Thomas G. Gibson, Laurel M. Bybell
The second Lehigh Tunnel; geology and the New Austrian Tunnelling Method
No abstract available.
Authors
Jack B. Epstein, Patricia F. Buis
Pliocene paleoclimatic reconstruction using dinoflagellate cysts: Comparison of methods
The application of quantitative and semiquantitative methods to assemblage data from dinoflagellate cysts shows potential for interpreting past environments, both in terms of paleotemperature estimates and in recognizing water masses and circulation patterns. Estimates of winter sea-surface temperature (WSST) were produced by using the Impagidinium Index (II) method, and by applying a winter-tempe
Authors
Lucy E. Edwards, P.J. Mudie, A. de Vernal
Geology, geophysics, and geochronology of the Manson impact structure
A problem with the impact hypothesis for the Cretaceous/Tertiary (K/T) mass extinction is the apparent absence of an identifiable impact site. The Manson impact structure is a candidate site because of its size (the largest such structure recognized in the United States); in addition, the largest and most abundant shocked quartz grains at the K/T boundary are found relatively close by, and its age
Authors
Jack B. Hartung, Michael J. Kunk, R. R. Anderson
Eocene-Oligocene sea-level changes on the New Jersey coastal plain linked to the deep-sea record
We use magnetostratigraphy and Sr-isotope stratigraphy to improve stratigraphic control for the Eocene to Oligocene of the New Jersey coastal plain (ACGS4 borehole). Magnetostratigraphy in many cases is complicated in outcrop sections of shallow-water (<200 m paleodepth) sediments by low remanence and weathering; we minimize these problems by analyzing large samples obtained from the ACGS4 borehol
Authors
Kenneth G. Miller, Dennis V. Kent, Andrew N. Brower, Laurel M. Bybell, Mark D. Feigenson, Richard K. Olsson, Richard Z. Poore
Dinoflagellate-cyst census data from the seabed samples of Wall and others (1977) and Turon (1984)
No abstract available.
Authors
Lucy E. Edwards, Victoria A.S. Andrle
Surficial geologic map of the Townsend quadrangle, Middlesex and Worcester Counties, Massachusetts, and Hillsborough County, New Hampshire
No abstract available.
Authors
Carl Koteff, Byron D. Stone
Peridinialean dinoflagellate plate patterns, labels and homologies
Tabulation patterns for peridinialean dinoflagellate thecae and cysts have been traditionally expressed using a plate labelling system described by C.A. Kofoid in the early 1900's. This system can obscure dinoflagellate plate homologies and has not always been strictly applied. The plate-labelling system presented here introduces new series labels but incorporates key features and ideas from the m
Authors
Lucy E. Edwards
Stratigraphy and sedimentology of Middle and Upper Silurian rocks and an enigmatic diamictite, southeastern New York
No abstract available.
Authors
Anthony Prave, Moses Alcala, Jack B. Epstein
Mélanges and olistostromes in the Appalachians of the United States and mainland Canada; An assessment
There is no completely accepted definition of a mélange, and the papers in this volume reflect this fact. In our regional assessment, the term mélange is principally used for a technically fragmented and mixed body of rock. A different term, olistostrome, is used for a chaotic and mixed rock body that formed by sedimentary processes such as slumping or gravity sliding. The term olistostromal mélan
Authors
Nicholas Rast, J. Wright Horton,