نتایج جستجو برای: organic petrography
تعداد نتایج: 203272 فیلتر نتایج به سال:
Hydroand glaciovolcanism are processes that have taken place on both Earth and Mars. The amount of materials produced by these processes that are present in the martian surface layer is unknown, but may be substantial. We have used Mars rover analogue analysis techniques to examine altered tuff samples collected from multiple hydrovolcanic features, tuff rings and tuff cones, in the American we...
L. Bonal*, G.R. Huss, A.N. Krot, and K. Nagashima, HIGP/SOEST, University of Hawai‘i at Mānoa, Honolulu, HI 96822, USA. *[email protected] Metal-rich (CB, CH, CB/CH-like) carbonaceous chondrites exhibit several anomalous characteristics not observed in other chondrite groups, including (i) a nearly complete absence of interchondrule fine-grained matrix, and (ii) the highest whole-rock enri...
Here, we report the mineralogy, petrography, C-N-O-stable isotope compositions, degree of disorder of organic matter, and abundances of presolar components of the chondrite Roberts Massif (RBT) 04133 using a coordinated, multitechnique approach. The results of this study are inconsistent with its initial classification as a Renazzo-like carbonaceous chondrite, and strongly support RBT 04133 bei...
Quantitative petrography is a scientific and industrial direction of geology, which made huge progress due to developments inventions in information technology optics the last decade. This article introducing modern directions quantitative describes their current state art as well methodical approaches application. The research objects macropetrography are hand specimens, borehole cores polishe...
This work applies established analytical techniques of physical sciences to Irish brick in order to gather evidence of ceramic technologies, provenance and sources of raw materials. Petrographic microscopy, X-ray diffractometry and scanning electron microscopy with an energy dispersive Xray diffraction attachment were used to study the brick of Rathfarham Castle, Dublin, built c.1618, where cla...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید