Results 61 to 70 of about 1,497,171 (212)
A talus rock glacier in Nantlle Valley, North Wales
Journal of Quaternary Science, EarlyView.ABSTRACT Landforms comprising mixtures of fine and coarse sediment and deposited during late glacial times are ubiquitous in the British mountains. In many cases, their interpretation has often proved contentious; as a result, the non‐generic term discrete debris accumulations (DDA) has been used to describe them and, over the last 50 years, some have ...
Stephan Harrison, Ed Anderson
wiley +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry +3 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot +8 more
wiley +1 more source
Terra Nova, EarlyView.ABSTRACT Thin, discontinuous, organic‐rich oil shale beds in the siliciclastic‐evaporitic Salt Range Formation (SRF) of Pakistan are of approximate Neoproterozoic to Cambrian age based on stratigraphic constraints. The beds are enriched (26–43 wt.% total organic carbon, TOC) in aliphatic organic matter (OM) of low thermal maturity despite their ...
Paul C. Hackley +4 more
wiley +1 more source
A Simple Method to Quantify Bedrock Map Error
Terra Nova, EarlyView.ABSTRACT Geologic maps are foundational to geology. However, most geologic map contacts lack quantitative estimates of uncertainty, typically displaying known contacts as a solid line and uncertain contacts as a dashed line. To address this gap, an easily applied method is presented that provides a quantitative measure of the location of a mapped ...
David J. Hart, Eric D. Stewart
wiley +1 more source
Natural Gas Industry B, 2014 There developed thick gypsum-salt strata in the Lower Paleozoic Ordovician in the Ordos Basin, particularly gypsum-salt in the 6th segment of the 5th member of Majiagou Fm (O1m56) in a wide distribution, serving as a good regional cap.
Yang Hua, Bao Hongping, Ma Zhanrong
doaj +1 more source
Upper Ordovician formations in the Maysville area, Kentucky [PDF]
, 1966 Upper Ordovician strata in the Maysville area, Kentucky, are divided into five formations. The basal Kope Formation is overlain by the Fairview Formation. Above the Fairview are two newly defined map units, the Grant Lake Limestone and the overlying Bull Fork Formation. The Preachersville Member of the Drakes Formation overlies the Bull Fork.
openaire +1 more source
Open Geosciences, 2018 Finding favorable sites for the exploration of shale gas, is still one of the important areas of research that needs immediate attention. The content of organic matter in shale plays a crucial role in the hydrocarbon generation potential, reservoir space
Liu Weiwei +13 more
doaj +1 more source
Ordovician acritarchs from the Upper Silesian Block [PDF]
, 2005 Lower Palaeozoic sediments of the Upper Silesia Block have not been equally well investigated. Lower Cambrian sediments found in the southern and eastern marginal parts are so far best recognized.
Jachowicz, M.
core
Paleogeography of the Pechora-Barents Sea paleobasins in the Late Ordovician-Early Devonian [PDF]
Нефтегазовая геология: Теория и практикаModern studies have made it possible to clarify and detail the overall picture of paleogeographic development and establish the basic patterns of the structure of Upper Ordovician-Lower Devonian sedimentary column in the Pechora-Barents Sea megabasin ...
Taninskaya N.V. +6 more
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