Results 41 to 50 of about 673,157 (217)

Carbonate microfacies and transgressive‐regressive sequences of Oxfordian shallow‐water limestones (Korallenoolith, Lower Saxony Basin)

The Depositional Record, EarlyView.
The Bisperode section is one of the most expanded and complete sections with shallow‐marine Oxfordian strata in the LSB. This study provides a reference record for shallow‐marine settings and allows for the correlation of the strata from the LSB with Oxfordian deposits distributed elsewhere in the world.
Deyan Zhang, François‐Nicolas Krencker, Stefan Huck, Ulrich Heimhofer   +3 more
wiley   +1 more source

Deformation in Moffat Shale detachment zones in the western part of the Scottish Southern Uplands [PDF]

, 2004
A study of the décollement zones in the Moffat Shale Group in the Ordovician Northern Belt of the Southern Uplands of Scotland reveals a progressive sequence of deformation and increased channelization of fluid flow.
Needham, D.T.
core   +1 more source

Holocene development of submerged keep‐up patch reefs on Bermuda without acroporids: A model of future reef accretion

The Depositional Record, EarlyView.
Bermuda patch reefs development was primarily controlled by massive coral framework construction, and variation in environmental energy, turbidity and bioerosion. These factors shaped the size, diversity and preservation of the framework, leading to a suppressed, steady vertical accretion.
Eduardo Islas‐Dominguez, Eberhard Gischler, J. Harold Hudson   +2 more
wiley   +1 more source

Palaeoproterozoic magnesite: lithological and isotopic evidence for playa/sabkha environments [PDF]

, 2001
Magnesite forms a series of 1- to 15-m-thick beds within the approximate to2.0 Ga (Palaeoproterozoic) Tulomozerskaya Formation, NW Fennoscandian Shield, Russia.
Aharon P., Aksenov E.M., Al-Aasm I.S., Baker A.J., Botz R.W., Braithwaite C.J.R., Braithwaite C.J.R., Coshell L., Curtis R., Fairchild I.J., Fallick A.E., Hardie L.A., Hudson J.D., Joshi M.N., Karhu J.A., Kralik M., Kretz R., Lambert I.B., Last W.M., McCrea J.M., Melezhik V.A., Misra R.C., Muller G., Perry E.C., Pukhtel' I.S., Renaut R.W., Rosen M.P., Rosen M.P., Rubin D.M., Schidlowski M., Schroll E., Shearman D.J., Southgate P.N., Tucker M.E., Valdiya K.S., Veizer J., Veizer J., Veizer J., Von der Borch C.C., Walter M.R., Yudovich Ya. E.   +40 more
core   +1 more source

Anomalously cool clumped isotope temperatures in tropical lagoon carbonates

The Depositional Record, EarlyView.
Carbonate clumped isotopes were used to reconstruct paleoclimate from lagoon sediments in the central tropical Pacific. Results were anomalously cool compared to modern measurements and other paleoclimate records. This study highlights the important of understanding carbonate facies and depositional environments in interpreting clumped isotope results.
D. A. Wyman‐Feravich, M. Ingalls, J. L. Conroy, R. He, S. Lusk   +4 more
wiley   +1 more source

Direct dating of mid-crustal shear zones with synkinematic allanite:new in situ U-Th-Pb geochronological approaches applied to the Mont Blanc massif [PDF]

, 2013
International audienceDating the timing of motion on crustal shear zones is of tremendous importance for understanding the assembly of orogenic terranes.
Cenki-tok, Benedicte, Darling, James, Dhuime, Bruno, Rolland, Yann, Storey, Craig   +4 more
core   +3 more sources

Trace elements, rare earth elements and isotopes of poorly preserved fossils from lower Cretaceous carbonates (Eastern Black Sea): Implications for early diagenetic alteration

The Depositional Record, EarlyView.
Analysing Rare Earth Elements (REEs) and other trace elements together with stable isotope data in poorly preserved belemnites can provide valuable insights into early diagenetic pathways, water‐interaction processes, and even potential redox conditions.
Merve Özyurt
wiley   +1 more source

High-grade metamorphism flying under the radar of accessory minerals

Geology, 2019
Uranium-lead (U-Pb) accessory mineral petrochronology has been increasingly used to constrain the timing of tectonometamorphic events. However, because mafic rocks commonly lack minerals with a high U/Pb ratio, they may be underrepresented in the ...
E. J. Thiessen, H. Gibson, D. Regis, S. Pehrsson, J. Cutts, M. Smit   +5 more
semanticscholar   +1 more source

Indicators of hot fluid migration in sedimentary basins: evidence from the UK Atlantic Margin [PDF]

, 2003
Microthermometric, petrographic and isotopic methods have been used to detect evidence for hot fluid flow in Mesozoic and Tertiary sediments from the NW UK continental margin, West of Shetland. New data presented here show that temperatures are hotter by
Boyce, A.J., Chen, H., Parnell, J., Watt, G.R., Wycherley, H.L.   +4 more
core   +1 more source

Genesis and reservoir preservation mechanism of 10 000‐m ultradeep dolomite in Chinese craton basin

Deep Underground Science and Engineering, EarlyView.
Potential exploration target stratum of 10 000‐m ultradeep dolomite in Sichuan Basin and Tarim Basin, China. Abstract The 10 000‐m ultradeep dolomite reservoir holds significant potential as a successor field for future oil and gas exploration in China's marine craton basin.
Guangyou Zhu, Xi Li, Bin Zhao, Hua Jiang, Yinghui Cao, Yan Zhang, Weiyan Chen, Tingting Li, Jiakai Hou   +8 more
wiley   +1 more source