Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Dennis W. Powers"'
Publikováno v:
Proceedings Of The 16th Multidisciplinary Conference On Sinkholes And The Engineering And Environmental Impacts Of Karst.
Autor:
Robert M. Holt, Dennis W. Powers
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Robert M. Holt, Dennis W. Powers
Publikováno v:
Geological Society of America Bulletin. 123:1513-1523
Coarse, clear halite from synsedimentary dissolution pipes in the Permian Salado Formation in southeastern New Mexico (USA) yielded viable halotolerant bacteria and well-preserved cellulose believed to be Permian in age. Here, we show that geologic a
Autor:
Robert M. Holt, Dennis W. Powers
Publikováno v:
Geological Society of America Bulletin. 122:1989-2004
Waste Control Specialists (WCS) has been granted permits to dispose of radioactive waste at their surface facility in western Andrews County, Texas, U.S.A. The facility is located over Permian-age, halite-bearing formations, and the possibility of di
Publikováno v:
Astrobiology. 8:215-228
In this study, we utilized transmission electron microscopy to examine the contents of fluid inclusions in halite (NaCl) and solid halite crystals collected 650 m below the surface from the Late Permian Salado Formation in southeastern New Mexico (US
Autor:
Dennis W. Powers, Tom Bown, Richard F. Kay, T. R.T. Mitchell, Matthew W. Colbert, John G. Fleagle
Publikováno v:
Journal of Human Evolution. 54:323-382
Dolichocebus is known from the type skull encased in a concretion, numerous isolated teeth, parts of two mandibles, and a talus. The specimens come from the Trelew Member (early Miocene, Colhuehuapian South American Land Mammal Age) of the Sarmiento
Publikováno v:
Geological Society, London, Special Publications. 285:335-364
Publikováno v:
Nature. 407:897-900
Bacteria have been found associated with a variety of ancient samples, however few studies are generally accepted due to questions about sample quality and contamination. When Cano and Borucki isolated a strain of Bacillus sphaericus from an extinct
Autor:
Dennis W. Powers, Robert M. Holt
Publikováno v:
Journal of Sedimentary Research. 70:29-36
Four halite beds of the Permian Rustler Formation in southeastern New Mexico thin dramatically over short lateral distances to correlative clastic (mudstone) beds. The mudstones have long been considered residues after post-burial dissolution (subros