Results 21 to 30 of about 8,773 (164)

Deep lithospheric dynamics beneath the Sierra Nevada during the Mesozoic and Cenozoic as inferred from xenolith petrology [PDF]

, 2001
Peridotite xenoliths erupted in late Miocene basalts (~8 Ma) in the central Sierra Nevada sample a lithosphere that is vertically stratified in terms of age and thermal history.
Brimhall, George H., Jr., Lee, Cin-Ty, Rudnick, Roberta L.   +2 more
core   +1 more source

Ground state order and spin-lattice coupling in tetrahedral spin systems Cu2Te2O5X2 [PDF]

, 2004
High-resolution ac susceptibility and thermal conductivity measurement on Cu2Te2O5X2(X=Br,Cl) single crystals are reported. For Br-sample, sample dependence prevents to distinguish between possibilities of magnetically ordered and spin-singlet ground ...
A. Bilušić, A. Smontara, A.N. Vasil’ev, A.N. Vasil’ev, A.V. Sologubenko, C. Gros, D. Drobac, F. Bussy, F. Mila, H. Berger, I. Živković, J. Jensen, K. Totsuka, K. Uchinokura, M. Hase, M. Hofmann, M. Isobe, M. Johnsson, M. Prester, P. Lemmens, P. Lemmens, W. Brenig   +21 more
core   +3 more sources

Theoretical petrology [PDF]

, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source

Re-Os isotope and platinum group elements of a FOcal ZOne mantle source, Louisville Seamounts Chain, Pacific ocean [PDF]

, 2015
The Louisville Seamount Chain (LSC) is, besides the Hawaiian-Emperor Chain, one of the longest-lived hotspot traces. We report here the first Re-Os isotope and platinum group element (PGE) data for Canopus, Rigil, and Burton Guyots along the chain, which
Akira Ishikawa, Barnes, Becker, Beier, Bennett, Bezos, Brandon, Bryce, Burton, Chazey, Cheng, Cohen, Courtillot, Dale, Day, Eisele, Farley, Fischer-Gödde, Fitton, Fitton, Fleet, Gaffney, Godfrey Fitton, Hanan, Hanyu, Hanyu, Hart, Hauri, Hawkins, Ireland, Ishikawa, Jackson, Jackson, Jamais, Katsuhiko Suzuki, Kellogg, Koppers, Koppers, Koppers, Lassiter, Lassiter, Lassiter, Lee, Lonsdale, Luguet, Mahoney, Mahoney, Maria Luisa G. Tejada, Martin, Martin, Meisel, Meisel, Mungall, Nichols, Norman, Palme, Peucker-Ehrenbrink, Peucker-Ehrenbrink, Pitcher, Rebecca Williams, Reisberg, Reisberg, Roy-Barman, Ryoko Senda, Schiano, Schiano, Sen, Shinotsuka, Sobolev, Sobolev, Stracke, Takeshi Hanyu, Tatsumi, Tatsumi, Tejada, Tejada, Tejada, Tejada, Vanderkluysen, Walker, Watts   +80 more
core   +1 more source

Zircon ages in granulite facies rocks: decoupling from geochemistry above 850 °C? [PDF]

, 2018
Granulite facies rocks frequently show a large spread in their zircon ages, the interpretation of which raises questions: Has the isotopic system been disturbed? By what process(es) and conditions did the alteration occur?
A Boriani, A Boriani, A Henk, A Langone, A Mulch, A Mulch, A Möller, A Zanetti, A Zingg, A Zingg, A-M Seydoux-Guillaume, AE Hofmann, B Bingen, B Schnetger, Barbara E. Kunz, BE Kunz, BE Kunz, C Annen, C Paton, C Paton, C Redler, C Redler, C Yakymchuk, CR McFarlane, CR McFarlane, D Regis, D Rubatto, D Rubatto, D Rubatto, D Rubatto, D Rubatto, Daniele Regis, DE Kelsey, DE Kelsey, DJ Cherniak, DJ Cherniak, DM Fountain, DM Fountain, E Rutter, EB Watson, EB Watson, EM Peterman, F Corfu, F Tomaschek, FJ Korhonen, G Bigi, G Fraser, G Peressini, G Rivalenti, G Rivalenti, G Vavra, G Vavra, GL Luvizotto, H Berckhemer, H Degeling, H Voshage, IS Williams, IS Williams, J Hermann, J Pape, J Sláma, JA Baldwin, JA Petrus, JE Quick, JE Quick, JF Diener, JW Valley, K Mezger, KR Mehnert, L Nasdala, L Nasdala, L Schiøtte, M Bertolani, M Bertolani, M Guillong, M Kohn, M Tichomirowa, MA Kusiak, MA Kusiak, Martin Engi, MJ Whitehouse, MP Roberts, MR Handy, MR Handy, NE Timms, NE Timms, NJ Pearce, NM Kelly, P Monjoie, P Vonlanthen, PW Hoskin, PW Hoskin, PW Hoskin, R Schuster, RC Ewing, RJ Taylor, RM Flowers, RT Pidgeon, S Barboza, S Barboza, S Bodorkos, S Capedri, S Piazolo, S Sinigoi, S Sinigoi, S Sinigoi, SE Jackson, SH Vorhies, SL Harley, SM Reddy, SM Schmid, SM Schmid, T Geisler, T Geisler, TA Ewing, U Schaltegger, U Schaltegger, U Schaltegger, U Schaltegger, US Klötzli, WF McDonough   +120 more
core   +1 more source

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

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

A dual geochemical-phytolith methodology for studying activity areas in ephemeral sites: Insights from an ethnographic case study from Jordan. [PDF]

, 2018
This study aims to contribute to the interpretation of ephemeral sites by exploring the efficacy of geochemistry and phytolith analysis to identify activity areas in seasonally occupied ethnographic sites. The application of a portable X ray fluorescence
Jenkins, Emma L., Palmer, C., Vos, Daniella   +2 more
core   +1 more source

A review of multiscale numerical modeling of rock mechanics and rock engineering

Deep Underground Science and Engineering, EarlyView.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

Trace element geochemistry of peridotites from the Izu-Bonin-Mariana Forearc, Leg 125

, 1992
Trace element analyses (first-series transition elements, Ti, Rb, Sr, Zr, Y, Nb, and REE) were carried out on whole rocks and minerals from 10 peridotite samples from both Conical Seamount in the Mariana forearc and Torishima Forearc Seamount in the Izu ...
Ingram, G., Johnson, K. T. M., Parkinson, I. J., Pearce, J. A., Thirlwall, M. F.   +4 more
core   +1 more source