Zobrazeno 1 - 10
of 1 790
pro vyhledávání: '"R. Wirth"'
Autor:
G. Franz, P. Lyckberg, V. Khomenko, V. Chournousenko, H.-M. Schulz, N. Mahlstedt, R. Wirth, J. Glodny, U. Gernert, J. Nissen
Publikováno v:
Biogeosciences, Vol 19, Pp 1795-1811 (2022)
We report on Precambrian microfossils from igneous rocks of the Volyn pegmatite district, associated with the Paleoproterozoic Korosten pluton, northwestern Ukraine. The fossils were recovered from meter-sized miarolitic cavities and show a well-pres
Externí odkaz:
https://doaj.org/article/0b9b94d201e84d18be28b1f74939ac39
Autor:
V. V. Sharygin, S. N. Britvin, F. V. Kaminsky, R. Wirth, E. N. Nigmatulina, G. A. Yakovlev, K. A. Novoselov, M. N. Murashko
Publikováno v:
European Journal of Mineralogy, Vol 33, Pp 727-742 (2021)
Ellinaite, a natural analog of the post-spinel phase β-CaCr2O4, was discovered at the Hatrurim Basin, Hatrurim pyrometamorphic formation (the Mottled Zone), Israel, and in an inclusion within the super-deep diamond collected at the placer of the Sor
Externí odkaz:
https://doaj.org/article/802cc9c1293e48f7ab9e950effce8a05
Publikováno v:
European Journal of Mineralogy, Vol 33, Pp 675-686 (2021)
The reaction of 3.65 Å phase <=> clinoenstatite + water was investigated in five experiments at 10 GPa, 470–600 ∘C, using a rotating multi-anvil press. Under these P/T conditions, clinoenstatite exists in its high-pressure modification, which, h
Externí odkaz:
https://doaj.org/article/20178e10140f49ab9085dbfea6c774ce
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Abstract Metamorphic diamonds hosted by major and accessory phases in ultrahigh-pressure (UHP) metamorphic terranes represent important indicators of deep subduction and exhumation of continental crust at convergent plate boundaries. However, their n
Externí odkaz:
https://doaj.org/article/f6d5b5892a714f4e89311eb149504134
Publikováno v:
Solid Earth, Vol 11, Pp 2425-2438 (2020)
Porosity reduction in rocks from a fault core can cause elevated pore fluid pressures and consequently influence the recurrence time of earthquakes. We investigated the porosity distribution in the New Zealand's Alpine Fault core in samples recovered
Externí odkaz:
https://doaj.org/article/8c20dfe006aa4cb78a2c98f6ede99d26
Publikováno v:
European Journal of Mineralogy, Vol 32, Pp 557-574 (2020)
Titanium minerals enclosed in corundum separated from the Cr-11 orebody include native Ti, zamboite (FeTiSi2), osbornite (TiN)-khamrabaevite (TiC) solid solutions, and jingsuiite (TiB2), as well as the new minerals badengzhuite (TiP) and zhiqinite (T
Externí odkaz:
https://doaj.org/article/ffe71974dae6460a875b80839e48d742
Autor:
A. Vuillemin, A. Friese, R. Wirth, J. A. Schuessler, A. M. Schleicher, H. Kemnitz, A. Lücke, K. W. Bauer, S. Nomosatryo, F. von Blanckenburg, R. Simister, L. G. Ordoñez, D. Ariztegui, C. Henny, J. M. Russell, S. Bijaksana, H. Vogel, S. A. Crowe, J. Kallmeyer
Publikováno v:
Biogeosciences, Vol 17, Pp 1955-1973 (2020)
Ferruginous lacustrine systems, such as Lake Towuti, Indonesia, are characterized by a specific type of phosphorus cycling in which hydrous ferric iron (oxyhydr)oxides trap and precipitate phosphorus to the sediment, which reduces its bioavailability
Externí odkaz:
https://doaj.org/article/f2f480bc0c3c4af1addd6d063872b0f4
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Understanding foraminifera mineralisation pathways is essential to correctly decipher the geochemical climate signals recorded in their shells. Here, the authors identify a non-classical crystallization pathway via metastable phases for Orbulina univ
Externí odkaz:
https://doaj.org/article/c0a7357a58044ac585a67d9f265326ba
Autor:
B. A. Brown, K. Minamisono, J. Piekarewicz, H. Hergert, D. Garand, A. Klose, K. König, J. D. Lantis, Y. Liu, B. Maaß, A. J. Miller, W. Nörtershäuser, S. V. Pineda, R. C. Powel, D. M. Rossi, F. Sommer, C. Sumithrarachchi, A. Teigelhöfer, J. Watkins, R. Wirth
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 022035 (2020)
Charge radii of the unstable ^{36}Ca and ^{38}Ca nuclei were recently determined and used to compute differences in charge radii between mirror nuclei ΔR_{ch} for the ^{36}Ca−^{36}S and ^{38}Ca−^{38}Ar mirror pairs. Given the correlation between
Externí odkaz:
https://doaj.org/article/cac60cf7945640539a2e6d4ffa3ed65f
Publikováno v:
Royal Society Open Science, Vol 4, Iss 9 (2017)
Tridacna derasa shells show a crossed lamellar microstructure consisting of three hierarchical lamellar structural orders. The mineral part is intimately intergrown with 0.9 wt% organics, namely polysaccharides, glycosylated and unglycosylated protei
Externí odkaz:
https://doaj.org/article/25ac9c713acb4b1e8ace1c63b55248b0