Results 91 to 100 of about 40,471 (242)

The engineering geology of the Nottingham area, UK [PDF]

open access: yes, 2009
Nottingham was built near a crossing point on the River Trent in the East Midlands of England. Initially, the City developed on a low sandstone hill close to the north bank of the river, which provided a secure, well-drained location above the marshes ...
Bell, F.G.   +3 more
core   +1 more source

Heavy mineral stratigraphy of the Unayzah Formation and Basal Khuff Clastics (Carboniferous to Permian) of Central Saudi Arabia [PDF]

open access: yes, 2010
A study of heavy mineral assemblages in the Unayzah Reservoir sandstones of central Saudi Arabia has identified successive changes in provenance signature.
Cocker, Joshua D.   +2 more
core  

Chirotherium barthii Kaup 1835 from the Triassic of the Isle of Arran, Scotland [PDF]

open access: yes, 2002
The mould of a track from SE Arran, and several in situ trackways and individual tracks, as well as a partial trackway on a loose block of Triassic sandstone, from western Arran, represent the first verifiable fossil tracks of Chirotherium from the ...
BENTON   +14 more
core   +1 more source

Detrital zircon SHRIMP U-Pb age study of the Cordillera Darwin Metamorphic Complex of Tierra del Fuego : sedimentary sources and implications for the evolution of the Pacific margin of Gondwana [PDF]

open access: yes, 2010
The Cordillera Darwin Metamorphic Complex in the southernmost Andes includes a basement of probable Palaeozoic age, a mid-Jurassic and younger volcano-sedimentary cover, and a suite of Jurassic granites, all of which were jointly metamorphosed during the
Calderon, M.   +6 more
core   +1 more source

Geology of Tunceli-Bingöl Region of Eastern Turkey

open access: yesBulletin of the Mineral Research and Exploration, 1965
This region is located in the Taurus orogenic belt of the highland district of Eastern Turkey. Lower Permian metasediments and Upper Permian suberystalline limestone are the oldest exposed formations of this region.
F. A. AFSHAR
doaj  

FUSULINID SEQUENCE EVOLUTION AND SEQUENCE EXTINCTIONIN WOLFCAMPIAN AND LEONARDIAN SERIES (LOWER PERMIAN),GLASS MOUNTAINS, WEST TEXAS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2003
In the Permian Wolfcampian and Leonardian Series of West Texas, sequence evolution and sequence extinction record the appearance and disappearance of morphological species in stratigraphic successions that show repeated sea level fluctuations and ...
CHARLES A. ROSS, JUNE R. P. ROSS
doaj   +1 more source

Formation of the Wink Sink, A Salt Dissolution and Collapse Feature, Winkler County, Texas [PDF]

open access: yes, 1982
UT ...
Baumgardner, Jr., Robert W.   +2 more
core   +1 more source

Middle Permian conodonts from Oman

open access: yes, 2001
This paper is to report the joint occurrence of Mesogondolella aserrata, the conodont index species of the Wordian Stage, and Mesogondolella siciliensis in ammonoid-bearing Wordian rocks of the Rustaq and Wadi Wasit sections, Oman.
Kozur, Hans   +5 more
openaire   +1 more source

Was the Lhasa Block at Low Latitudes in the Middle Permian? Insights From New Paleomagnetic and Geochronological Data

open access: yesGeophysical Research Letters
The absence of reliable paleomagnetic constraints from the Lhasa Block has led to alternative interpretations of its late Paleozoic position and timing of rifting from Gondwana, reflecting uncertainties in early Neo‐Tethyan paleogeography.
Longyun Xing   +12 more
doaj   +1 more source

DAGMARITA SHHREZAENSIS N. SP. GLOBIVALVULINID FORAMINIFER, (WUCHIAPINGIAN, LATE PERMIAN, CENTRAL IRAN)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2003
In the course of an investigation on the major mass extintion event near the P/T boundary, in the vicinity of Shahreza (South Isfahan) in Iran, a stratigraphically significant new species of foraminifera (Dagmarita shahreaensis n.
PARVIN MOHTAT-AGHAI, DANIEL VACHARD
doaj   +1 more source

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