Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Helmut Schleicher"'
Autor:
Tykot, Robert H.
Publikováno v:
American Antiquity, 1993 Oct 01. 58(4), 769-770.
Externí odkaz:
https://www.jstor.org/stable/282217
Autor:
Robert H. Tykot
Publikováno v:
American Antiquity. 58:769-770
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbb79846ea30a1b072cfe13717ed00f0
https://doi.org/10.2307/282217
https://doi.org/10.2307/282217
Autor:
P.Q. Dresser
Publikováno v:
The Holocene. 1:181-181
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57a92b3f8ebbef7963cc32fbac6be586
https://doi.org/10.1177/095968369100100212
https://doi.org/10.1177/095968369100100212
Autor:
Helmut Schleicher
Publikováno v:
Journal of the Geological Society of India. 93:305-312
Inclusions of calcite within large euhedral apatite crystals from the pyroxenite-carbonatite-syenite complex of Sevattur, Tamil Nadu, south India, were identified to represent inclusions of a primary carbonatitic melt (calcite I) from which the apati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17f9053e104f77ab1da1b8d274281ec6
https://doi.org/10.1007/s12594-019-1178-9
https://doi.org/10.1007/s12594-019-1178-9
Autor:
Tamara Kartal, Paul G. Spry, Vasilios Melfos, Panagiotis Voudouris, Melissa Ortelli, Robert Moritz, Helmut Schleicher
Publikováno v:
The Canadian Mineralogist
Canadian Mineralogist, Vol. 51, No 2 (2013) pp. 253-284
Canadian Mineralogist, Vol. 51, No 2 (2013) pp. 253-284
The Pagoni Rachi/Kirki Cu-Mo ± Re ± Au deposit is a telescoped porphyry-epithermal system that contains molybdenite with up to 4.7 wt.% Re and the rare mineral rheniite (ReS2). The deposit is spatially related to an Oligocene, calc-alkaline hornble
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bda647a87d0b9c44388f5b573a54a5c5
Publikováno v:
European Journal of Mineralogy. 23:981-992
A selection of archaeometallurgical remains from the 3rd/4th century A.D., found in Aksum, Ethiopia, were analysed in order to determine the nature of the process by which they were produced, i.e. copper or iron smelting. Chemical and mineralogical a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3380161bf09d405169abb3bd3343b629
https://doi.org/10.1127/0935-1221/2011/0023-2167
https://doi.org/10.1127/0935-1221/2011/0023-2167
Autor:
Wilhelm van Bronswijk, Robert T. Pidgeon, Reinhardt Kurtz, Thorsten Geisler, Helmut Schleicher
Publikováno v:
American Mineralogist. 88:1496-1513
We present the results of a series of hydrothermal experiments on grains from two partially metamict zircon samples from Sri Lanka in the temperature range 350 to 650 °C and with different solutions (2 M AlCl 3 , 2 M CaCl 2 , pure H 2 O, and a multi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52bc44b670d6e4705abea8d86ced3ed0
https://doi.org/10.2138/am-2003-1013
https://doi.org/10.2138/am-2003-1013
Autor:
Meinert Rahn, Thorsten Geisler, A. A. Rashwan, Robert T. Pidgeon, U. Poller, Helmut Schleicher, Frank Tomaschek, H. Zwingmann
Publikováno v:
Mineralogical Magazine. 67:485-508
The chemical and structural alteration of metamict zircon crystals from a 619 ±17 (2σ) Ma old, posttectonic granite in the southern part of the Eastern Desert, Egypt was studied. The crystals show simple oscillatory growth zones with metamictizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cde34f99ebed28c12e9f250349636cad
https://doi.org/10.1180/0026461036730112
https://doi.org/10.1180/0026461036730112
Autor:
Thorsten Geisler, Helmut Schleicher
Publikováno v:
Chemical Geology. 163:269-285
We present a simple new background modeling method particularly for the determination of trace concentrations of Pb, U and Th to date zircons chemically by electron microprobe. This method reduces the acquisition time considerably, and at the same ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae6e712a788a16f06cdf80450304ddce
https://doi.org/10.1016/s0009-2541(99)00099-6
https://doi.org/10.1016/s0009-2541(99)00099-6