Results 61 to 70 of about 5,039 (234)

The δCe-ΣREE Instruction on the Sedimentary Facies

open access: yesProcedia Earth and Planetary Science, 2011
AbstractBased on the analysis of the rare earth elements (REEs) concentration, ratios and distribution pattern in the acid fractions at the Xiaohushan (XHS) section in Ejina basin. The results show that the δCe-ΣREE plot and regression equation can clearly distinguish sediments from lacustrine deposits and the eolian sand. The boundary can be described
Zhang, Wenxiang   +5 more
openaire   +1 more source

Modelling Patterns of Past Inundation Processes Combining Geoarchaeology and Morphometric Hydrological Analysis in the Shashe‐Limpopo Basin, South Africa

open access: yesArchaeometry, EarlyView.
ABSTRACT Riverine and valley systems across the globe have been central to the development of past urban centres. By AD 900, the Shashe and Limpopo Rivers seem to have facilitated the interaction and integration of early farming communities in southern Africa. This paper focuses on the application of geoarchaeological perspectives made available by the
B. S. Nxumalo
wiley   +1 more source

Sedimentary characteristics of coals in meandering river and braided river facies and during their transitions: A case study the Walloon Subgroup in the F8 block in the Surat Basin, Australia

open access: yesMeitian dizhi yu kantan
ObjectiveAustralia is recognized as the fourth largest producer and the second largest exporter of coals in the world. The Bowen-Surat Basin is the largest coal producing basin in this country.
Zehong CUI   +4 more
doaj   +1 more source

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

open access: yesBoreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida   +5 more
wiley   +1 more source

Deep carbonate gas reservoir sweet spot identification with seismic data based on dual-factor control of sedimentary facies and fault system

open access: yesFrontiers in Earth Science
Deep carbonate reservoirs are attractive targets for gas development. These reservoirs are deeply buried, and commonly possess strong heterogeneity and poor seismic data quality, making the identification of favorable production areas (“sweet spots ...
Guanyu Zhang   +5 more
doaj   +1 more source

Hydrocarbon formation and accumulation of the deep Paleogene of the Jiyang Depression, Shengli Oilfield

open access: yesPetroleum Exploration and Development, 2011
Using geochemistry, sedimentary and petroleum geology methods, and based on the analysis of spatial distribution of deep source rocks and sedimentary organic facies, the favorable exploration prospects in the Jiyang Depression, Shengli Oilfield are ...
Linye Zhang   +4 more
doaj   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

open access: yesBoreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest   +10 more
wiley   +1 more source

Facies and Facies Architecture of the Ivanić Grad Formation (Upper Pannonian) - Sava Depression, NW Croatia

open access: yesGeologia Croatica, 2002
Four facies were distinguished within the Ivanić Grad Formation ofthe Sava Depression: massive marl facies (F1), thick-bedded to massivesandstone facies (F2), thin-bedded sandstone facies (F3) and thinbeddedsandstone, siltite and marl facies (F4 ...
Boris Vrbanac
doaj   +1 more source

Chironomid‐based summer temperature reconstruction of the Eemian–Weichselian transition at Lichtenberg, northern Germany

open access: yesBoreas, EarlyView.
Understanding the temperature variability of past interglacial cycles is essential to predict future climates. We present a new summer temperature reconstruction, based on the subfossil chironomid record from a small palaeolake adjacent to the Middle Palaeolithic site of Lichtenberg, northern Germany. The record spans from the Saalian late glacial over
Sonja Rigterink   +10 more
wiley   +1 more source

Hydrous Carbonatitic Liquids Drive CO2 Recycling From Subducted Marls and Limestones

open access: yesGeophysical Monograph Series, Page 209-221., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Erwin Schettino, Stefano Poli
wiley  

+1 more source

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