Results 51 to 60 of about 2,318 (188)

Types of Fluid Alteration and Developing Mechanism of Deep Marine Carbonate Reservoirs

Geofluids, Volume 2019, Issue 1, 2019., 2019
Accurate recognition of the types of alteration fluid and the development mechanisms are important concerns in studying deep marine carbonate reservoirs. Major fluid types, such as seawater, meteoric water, deep burial formation water, hydrothermal fluid, and thermochemical sulfate reduction‐ (TSR‐) derived fluid, were identified based on carbon ...
Dongya Zhu, Quanyou Liu, Juntao Zhang, Qian Ding, Zhiliang He, Xuefeng Zhang, Julien Bourdet   +6 more
wiley   +1 more source

Distribution of Upper Paleozoic Coal Seams in the Southeastern Ordos Basin

Energies, 2022
The Ordos Basin contains abundant coal resources in the Upper Paleozoic strata. They are shallowly buried or exposed in the periphery of the basin, forming recoverable coal mines and coalbed methane resources.
Yunwen Guan, Qijun Guo, Renhai Pu, Xiaoping Gao, Shuo Chen, Tianyu Ji   +5 more
doaj   +1 more source

Fábricas diagenéticas asociadas al paleokarsts del techo de la unidad intermedia del Mioceno de la Cuenca de Madrid. [PDF]

, 1997
Los materiales carbonáticos y evaporíticos del techo de la Unidad Intermedia del Mioceno de la Cuenca de Madrid han actuado como soporte de fenómenos de karstificación temprana, cuyo desarrollo ha supuesto un cambio significativo en la evolución del ...
Calvo Sorando, José Pedro, Cañaveras, J.C., Hoyos, M., Ordóñez Delgado, Salvador   +3 more
core  

Geological Composition and Structure of the Filling Zone and Its Water‐Resisting Property Evaluation on the Top of Ordovician Limestone

Geofluids, Volume 2019, Issue 1, 2019., 2019
With the gradual increase in mining depth of coal fields in North China, the threat posed by karstic Ordovician limestone water to the safe stoping of mines is becoming increasingly prominent. Investigating the water‐resisting property of the filling zone on the top of the Ordovician limestone provides the key to safe mining under pressure.
Qiqing Wang, Wenping Li, Qiangqiang Liu, Mauro Cacace   +3 more
wiley   +1 more source

Geology and Hydrology of Karst in West-Central and North-Central Florida [PDF]

, 2008
The state of Florida is blessed with the highest density of large springs in North America and hundreds of smaller springs where the water from limestone aquifers returns to the surface (Scott et al., 2004).
Florea, Lee J
core   +1 more source

The neogene-quaternary evolution of the karst landscape of the Veszprém plateau based on the study of Meggyespuszta paleodoline, Hungary [PDF]

, 2015
The development and the geological activity of the Meggyespuszta paleodoline in Hungary were reconsidered in the light of new findings and review of complex stratigraphic and morphological results.
Bede-Fazekas, Ákos, Hammer, Tamás, Mlinárik, Lilla, Padisák, Judit, Trájer, Attila János   +4 more
core   +2 more sources

Multiphase Calcite Cementation and Fluids Evolution of a Deeply Buried Carbonate Reservoir in the Upper Ordovician Lianglitag Formation, Tahe Oilfield, Tarim Basin, NW China

Geofluids, Volume 2017, Issue 1, 2017., 2017
Oil and gas have been found in the Upper Ordovician Lianglitag Formation carbonates in the Tahe Oilfield, Tarim Basin, NW China. This study documents the origin of diagenetic fluids by using a combination of petrology, SIMS, fluid inclusion, and radiogenic isotope analysis. Six stages of calcite cements were revealed.
Jiaqing Liu, Zhong Li, Lijuan Cheng, Jiawei Li, Zhijun Jin   +4 more
wiley   +1 more source

Perfiles paleokarsticos en el techo de la unidad intermedia del mioceno de la cuenca de Madrid

Estudios Geologicos, 2003
En el techo de la Unidad Intermedia del Mioceno de la Cuenca de Madrid se ha desarrollado un paleokarst temprano, somero y de forma tabular que muestra un marcado control litológico y del dispositivo de facies deposicionales en su génesis.
J. C. Cañaveras, S. Sánchez-Moral, S. Sánchez-Moral, S. Ordóñez, S. Ordóñez, J. P. Calvo, J. P. Calvo   +6 more
doaj   +1 more source

Pliocene Te Aute limestones, New Zealand: Expanding concepts for cool-water shelf carbonates [PDF]

, 2003
Acceptance of a spectrum of warm- through cold-water shallow-marine carbonate facies has become of fundamental importance for correctly interpreting the origin and significance of all ancient platform limestones.
Al‐Aasam I. S., Beu A. G., Boreen T. D., Brand U., Brand U., Caron V., Chave K. E., Cole E. R., de Caen R. F. B., de Caen R. F. B., Francis D. A., Haywick D. W. N., Haywick D. W. N., Hood S. D., James N. P., Kamp P. J. J., Lewis K. B., Lohmann K. C., Marshall J. F., McIntyre A., Nelson C. S., Nelson C. S., Scoffin T. P., Scudeler Baccelle L. S., Smith A. M., Summerhayes C. P., Veizer J., Winefield P. R.   +27 more
core   +2 more sources

Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle‐Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China

Geofluids, Volume 2017, Issue 1, 2017., 2017
Two fundamental forms of hypogenic karst systems (lateral stratiform hypogenic and cross‐formational fault‐vein hypogenic karst system) are distinguished mainly by differential effects of preexisting faults. In seismic cross sections, hypogenic karst systems are expressed as complex string-beads‐like seismic reflections associated with faults.
Hongtao Zhu, Xiu Zhu, Honghan Chen, Zhijun Jin   +3 more
wiley   +1 more source