Results 31 to 40 of about 92,035 (266)

Clay mineralogy, chemistry, and diagenesis of late devonian K-bentonite occurrences in northwestern Turkey [PDF]

, 2015
Thin beds of tephra (K-bentonites) formed by the diagenesis of volcanic ash are exposed within the limestone-dolomitic limestone successions of the Yilanli formation at Zonguldak and Bartin in northwestern Turkey.
Bozkaya, Ömer, Göncüoğlu, M.C., Günal-Türkmenoğlu, A., Okuyucu, C., Yilmaz, İ.Ö., Ünlüce, Ö.   +5 more
core   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Dolomite genesis and reservoir-cap rock assemblage in carbonate-evaporite paragenesis system

Petroleum Exploration and Development, 2019
Regarding to the problem on the reservoir-cap rock assemblage evaluation in the carbonate-evaporite paragenesis system, this study examined the dolomite and reservoirs genesis and the characteristics of reservoir-cap rock assemblage.
Anping HU, Anjiang SHEN, Hanxuan YANG, Jie ZHANG, Xin WANG, Liu YANG, Shaoxing MENG   +6 more
doaj   +1 more source

Production of hydrogen by unmixed steam reforming of methane [PDF]

, 2008
Unmixed steam reforming is an alternative method of catalytic steam reforming that uses separate air and fuel–steam feeds, producing a reformate high in H2 content using a single reactor and a variety of fuels. It claims insensitivity to carbon formation
Dupont, V., Hanley, I., Knight, E., Ross, A.B., Twigg, M.V.   +4 more
core   +1 more source

Fluid evolution in CM carbonaceous chondrites tracked through the oxygen isotopic compositions of carbonates [PDF]

, 2017
The oxygen isotopic compositions of calcite grains in four CM carbonaceous chondrites have been determined by NanoSIMS, and results reveal that aqueous solutions evolved in a similar manner between parent body regions with different intensities of ...
Alexander, Alexander, Barber, Benedix, Bland, Bonal, Bunch, Burbine, Clark, Clayton, Clayton, de Leuw, DuFresne, Emery, Fujiya, Fujiya, Guo, Hewins, Horita, Howard, I.A. Franchi, Jenniskens, Johnson, Kasuga, Lauretta, Lee, Lee, Lee, Lee, Lee, Lee, Lindgren, Lindgren, M.R. Lee, Marrocchi, McSween, McSween, N.A. Starkey, P. Lindgren, Palguta, Rubin, Rubin, Starkey, Tomeoka, Tyra, Tyra, Tyra, Velbel, Young, Young   +49 more
core   +2 more sources

Characteristics and genesis analysis of dolomite in Lower Ordovician Penglaiba Formation in Tahe area

Shiyou shiyan dizhi
The dolomite of the Lower Ordovician Penglaiba Formation is an important successor field for oil and gas exploration in the Tahe oilfield. Clarifying the sedimentary characteristics and genetic mechanisms of the dolomite is of great significance for oil ...
Qinqi XU, Jun PENG, Chengqi HE, Jingang XIA, Rui LIU, Wei HUANG   +5 more
doaj   +1 more source

Carbonates in space - The challenge of low temperature data

, 2007
Carbonates have repeatedly been discussed as possible carriers of stardust emission bands. However, the band assignments proposed so far were mainly based on room temperature powder transmission spectra of the respective minerals. Since very cold calcite
Baier, A., Henning, Th., Mutschke, H., Posch, Th.   +3 more
core   +1 more source

Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks 94101: evidence for aqueous alteration prior to complex mixing [PDF]

, 2013
Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks (LON) 94101 have been characterized using scanning and transmission electron microscopy and electron microprobe analysis to determine their degrees of aqueous alteration, and the timing of ...
Bischoff A., Bischoff A., Brearley A. J, Huss G. R., Zolensky M. E.   +4 more
core   +1 more source

Land Capability in the Lake Travis Vicinity, Texas A Practical Guide for the Use of Geologic and Engineering Data [PDF]

, 1975
UT ...
Woodruff, Jr., C. M.
core   +1 more source

Pore Types and Dolomite Reservoir Genesis of the Fifth Member of the Ordovician Majiagou Formation in the Central and Eastern Ordos Basin

Applied Sciences
The Ordovician dolomite in the Ordos Basin is an important natural gas reservoir. Exploring dolomite genesis and the factors influencing reservoir characteristics is essential for deep carbonate rock exploration.
Shilei Chen, Rong Dai, Shunshe Luo
doaj   +1 more source