Results 41 to 50 of about 7,725 (211)

Calcium isotope (δ^44/40Ca ) variations of Neogene planktonic foraminifera [PDF]

, 2005
Measurements of the calcium isotopic composition (δ44/40Ca) of planktonic foraminifera from the western equatorial Pacific and the Indian sector of the Southern Ocean show variations of about 0.6‰ over the past 24 Myr.
Alexander Heuser, Anton Eisenhauer, Antretter, Antretter, Artemov, Arvidson, Berner, Billups, Birck, Bohaty, Böhm, Böhm, Coffin, Compston, De La Rocha, Diester-Haass, Eberli, Eisenhauer, Farrell, Fietzke, Florian Böhm, Flower, François, Frey, Gaillardet, Gibbs, Gussone, Gussone, Hansen, Hardie, Harris, Hastings, Hemleben, Heuser, Hippler, Hippler, Holland, Horita, Jacobson, Kennett, Kiessling, Klaus Wallmann, Lea, Lear, Lemarchand, Levitus, Lyle, Marriott, Morse, Nikolaus Gussone, Nägler, Opdyke, Paul N. Pearson, Paytan, Pearson, Pearson, Pearson, Pearson, Premoli Silva, Rosenthal, Rowley, Schmitt, Schmitt, Schmitt, Shevenell, Skulan, Soudry, Stanley, Sun, Sun, Thomas F. Nägler, Vance, Vigour, Wallmann, Warthmann, Whitehead, Wolf-Christian Dullo, Zachos, Zhu   +78 more
core   +2 more sources

Cretaceous Limestone Dolomitization and Argument of Its Mg2+ Sources: Exampling the Bekhme and Qamchuqa Formations in the Zagros Collision Belt

Kurdistan Journal of Applied Research
This study unveils new considerations regarding the dolomitization of the Bekhme and Qamchuqa formations (BQFs), two reefal Cretaceous units in the Iraqi Zagros collisional belt.
Kamal Haji Karim , Sherzad Tofiq Mohamad
doaj   +1 more source

Fabric Preserving and Fabric Destroying Dolomitization: A case of Seawater Dolomitization

Sultan Qaboos University Journal for Science, 2006
This study is based on field, petrographic and geochemical investigations of Hajar Supergroup autochthonous rocks: Ruus Al Jibal Group- Musandam Peninsula, and Akhdar Group- Jebel Akhdar, Oman and U.A.E., and para-autochthonous Maqam Formation-Sumeini ...
Alham Jassim Al-Langawi
doaj   +1 more source

Survey of the diagenesis process and effect these process on reservoir quality of the Kangan formation in South Pars Field [PDF]

, 2009
Kangan and Upper Dalan formations are forming reservoir sequence of the South Pars field. Litology of the kangan formation is carbonate and (limestone and dolomite with anhydrite intervals), so digenetic processes were very active in this formation and ...
Ashkan Asadi Esksndar, Gholamreza Hosseinyar, Hossein Rahimpour-Bonab, Masoud Asgharian Rostami   +3 more
core   +1 more source

Numerical investigation of the correlations of hydraulic and elastic characteristics in diverse carbonate rock types

Deep Underground Science and Engineering, EarlyView.
We use the linear Boolean model and the discrete Fourier transformation approach to generate various carbonate rocks. The lattice Boltzmann method and the finite element method are applied to calculate permeability and elastic wave velocity, respectively.
Yutian Zhang, Yifan Wu, Chi Zhang, Fengqiao Wang, Hucheng Deng, Meiyan Fu, Yonghui Li, Qi Li   +7 more
wiley   +1 more source

The endo-upwelling concept : from geothermal convection to reef construction [PDF]

, 1993
Les analyses d'eaux interstitielles faites dans les atolls de Mururoa et de Tikehau (Tuamotu) montrent qu'elles sont riches en sels nutritifs dissous. Le marqueur conservatif salinité indique une origine océanique profonde (eau antarticque intermédiaire)
Rougerie, Francis, Wauthy, Bruno
core   +1 more source

Characteristics of Lacustrine Diamictite and Analysis of Diagenetic Reservoir Facies in the Neogene Lower Youshashan Formation in the Dafengshan Tectonic Belt in the Qaidam Basin

Energy Science &Engineering, EarlyView.
Based on field outcrop data, core descriptions, comprehensive thin section data (plain, cast, and fluorescent), scanning electron microscopy, whole rock analysis via X‐ray diffraction, physical property tests, element logging, core recording, and oil pilot tests, we propose utilizing a mature and practical three component classification method for ...
Lin Xie, Chang Liu, Hui He, Xianming Li, Mingqiu Hou, Pengshan Ma, Yu‐Jianjun Xue, Liang Qiao   +7 more
wiley   +1 more source

Ferroan Dolomitization by Seawater Interaction with Mafic Igneous Dikes and Carbonate Host Rock at the Latemar Platform, Dolomites, Italy: Numerical Modeling of Spatial, Temporal, and Temperature Data

Geofluids, 2017
Numerous publications address the petrogenesis of the partially dolomitized Latemar carbonate platform, Italy. A common factor is interpretation of geochemical data in terms of heating via regional igneous activity that provided kinetically favorable ...
K. Blomme, S. J. Fowler, P. Bachaud, F. H. Nader, A. Michel, R. Swennen   +5 more
doaj   +1 more source

Geologic quadrangle map no. 47 [PDF]

, 1978
Process Steps: 1. Either: a) a Portable Document Format (PDF) version of the map provided the Bureau of Economic Geology, University of Texas at Austin was converted from pdf to Tagged Image File Format (TIFF) or b) a paper map was scanned and saved in ...
Barnes, Virgil E. (Virgil Everett), 1903-1998
core   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source