Results 111 to 120 of about 4,674,957 (389)

Weichselian glacial stratigraphy in Hyvinkaa, southern Finland [PDF]

Bulletin of the Geological Society of Finland, 1999
Two tills in Hyvinkää represent one Weichselian glaciation: the lower till, named the Tanssikallio Till, being a basal lodgement till formed during the initial stage of the last Weichselian glaciation, and the upper till, named the Hyvinkää Till, being a
J. Donner
doaj   +1 more source

Sedimentology and kinematics of a large, retrogressive growth-fault system in Upper Carboniferous deltaic sediments, western Ireland [PDF]

, 2004
Growth faulting is a common feature of many deltaic environments and is vital in determining local sediment dispersal and accumulation, and hence in controlling the resultant sedimentary facies distribution and architecture.
Busch D.A., Chisholm J.I., Collinson J.D., Crans W., Edwards M.B., Elliott T., Evamy D.D., Hampson G.J., Locat J., Nemec W., Rider M.H., Rider M.H., Wignall P.B.   +12 more
core   +1 more source

Smithian–Spathian carbonate geochemistry in the northern Thaynes Group influenced by multiple styles of diagenesis

The Depositional Record, EarlyView.
While the Smithian–Spathian boundary carbon isotopic excursion has been traditionally interpreted as capturing global carbon cycle behaviour, recent studies have suggested that at least some Early Triassic carbon isotopic excursions may incorporate influences from authigenic or early diagenetic processes.
Jordan P. Todes, Franziska R. Blattmann, Torsten Vennemann, Elke Schneebeli‐Hermann, Hugo Bucher, Dan P. Razionale, Clara L. Blättler   +6 more
wiley   +1 more source

A drilling data-constrained seismic mapping method for intermediate-mafic volcanic facies

Petroleum Exploration and Development, 2016
Based on 112.5 km2 of 3-D seismic data and data of 8 prospecting wells drilled volcanic rocks in the 3rd member of the Paleogene Shahejie Formation in Hongxing area of the Eastern Sag of the Liaohe Depression, Bohai Bay Basin, three levels of volcanic ...
Yuhui FENG, Weihua BIAN, Guozhong GU, Yulong HUANG, Jintao QIU, Ang SUN, Pujun WANG   +6 more
doaj  

Primary aragonite and high-Mg calcite in the late Cambrian (Furongian) : Potential evidence from marine carbonates in Oman [PDF]

, 2016
Acknowledgements Fieldwork and sampling was funded by Petroleum Development Oman during S. Al Marjibis's Ph.D. Their help is gratefully acknowledged. We also thank colleagues at the University of Aberdeen, Julie Dougans (SUERC) for assisting with stable ...
Brasier, Alexander T., Neilson, Joyce E., North, Colin P.   +2 more
core   +1 more source

A deep convolutional encoder-decoder neural network in assisting seismic horizon tracking [PDF]

arXiv, 2018
Seismic horizons are geologically significant surfaces that can be used for building geology structure and stratigraphy models. However, horizon tracking in 3D seismic data is a time-consuming and challenging problem. Relief human from the tedious seismic interpretation is one of the hot research topics.
arxiv  

Evidence for subsidence rate variation in the Newark Basin and its influence on the deposition of fluvial sediments of the Stockton Formation

The Depositional Record, EarlyView.
The Newark Basin has seen renewed interest recently as a potential location for carbon sequestration. This study uses a recently exposed outcrop to investigate the reasons behind varying lithologies and post‐depositional soft‐sediment deformation in the fluvial sandstones of the Stockton Formation. Using field observations and sediment geochemistry, we
Jane L. Alexander, Sean T. Thatcher, Jay Tobon, Victoria Rivelli   +3 more
wiley   +1 more source

Recherches archéologiques à Dungo (Angola)

Afrique Archéologie Arts, 2010
The sites of Dungo IV and V, southward of Baia Farta, in the Benguela Province (Angola) yielded a new knowledge of the stratigraphy of the Lower Palaolithic industries of that part of Angola.
Manuel Gutierrez, Claude Guérin, Claudine Karlin, Maria da Piedade de Jesus, Maria Helena Benjamim, Anne-Élisabeth Lebatard, Didier L. Bourlès, Régis Braucher, Laetitia Leanni   +8 more
doaj   +1 more source

The stratigraphical distribution of Mid-Cretaceous foraminifera near Ventor, Isle of Wight [PDF]

, 2011
Ventnor No. 2 Borehole, located near Ventnor, Isle of Wight, penetrated the basal part of the Chalk Group and the Selborne Group before terminating in the upper part of the Lower Greensand Group (Sandrock Formation).
Hopson, Peter M., Wilkinson, Ian P.
core   +1 more source

Interglacial dust, ocean fertilisation and Neoproterozoic earth oxygenation

The Depositional Record, EarlyView.
Mineral dust is an integral part of modern ocean nutrient supply. It is originated mainly in deserts and by glacial processes. Given the global scale of the Neoproterozoic glaciations, we suggest that mineral dust formed during snowball events were blown to oceans, sustaining life, promoting CO2 sequestration and contributing to the oxygenation of ...
Leandro G. DaSilva, Peir K. Pufahl, Noel P. James   +2 more
wiley   +1 more source