Results 111 to 120 of about 318,456 (400)
The Depositional Record, EarlyView.The Joulters ooid sandbody of northern Great Bahama Bank is a vast expanse of muddy ooid sands partly rimmed by clean ooid sands and formed into a relatively thick layer of significant extent. Knowledge of the development of depositional and diagenetic patterns in the Joulters example has forwarded our general understanding of carbonate sedimentology ...
Harris Paul
wiley +1 more source
CARBONATES FROM THE VISHNEVOGORSKOE ZR-NB DEPOSIT (SOUTHERN URALS) [PDF]
Минералогия, 2015 Data on carbonates in alkaline rocks, pegmatites, and late veinlets of the Vishnevogorskoe deposit are summarized. Among 21 minerals studied, calcite is the major mineral; dolomite, ankerite, siderite, aragonite, bastnasite-(Ce), and strontianite are ...
V.I. Popova +5 more
doaj
Transmission electron microscopy of an interplanetary dust particle with links to CI chondrites [PDF]
The majority of hydrated interplanetary dust particles (IDPs) have compositions that resemble CI and CM chondrites, however, their mineralogies are most similar to the fine grained material in certain altered type-3 carbonaceous and ordinary chondrites ...
Keller, Lindsay P. +2 more
core +1 more source
Experimental study of laboratory-heated CM2 chondrites Mighei and Murchison [PDF]
, 2006 We conducted experimental heating of two CM2 chondrites, Murchison and Mighei, to study changes in their oxygen isotopic compositions and mineralogy and explore possible genetic relationships between MCCs and normal ...
Baker, L. +7 more
core
A geochemical study of the winonaites: Evidence for limited partial melting and constraints on the precursor composition [PDF]
, 2017 The winonaites are primitive achondrites which are associated with the IAB iron meteorites. Textural evidence implies heating to at least the Fe, Ni–FeS cotectic, but previous geochemical studies are ambiguous about the extent of silicate melting in ...
Benedix, Gretchen K. +6 more
core +2 more sources
The Depositional Record, EarlyView.Microbialites are common throughout the rock record and key to our understanding of Earth history, yet a relatively common microscopy technique—cathodoluminescence (CL)—has not previously been leveraged to understand them. In this contribution, we examine microbialites of varying ages (modern to Proterozoic) with CL and report on the patterns and ...
Cedric J. Hagen +11 more
wiley +1 more source
Petrologic and geophysical study of the source of long wavelength crustal magnetic anomalies [PDF]
The magnetic mineralogy and magnetic signature of banded ion formations, diagenetic (unmetamorphosed) and low grade banded iron formations, high-grade mineralogy, and phase equilibria of magnetite inorogenic magmers are ...
Marsch, B., Schlinger, C. M.
core +1 more source
Optical Mineralogy in a Modern Earth Sciences Curriculum [PDF]
, 2007 Provides pedagogical insight concerning the skill of studying minerals The resource being annotated is: http://www.dlese.org/dds/catalog_SERC-NAGT-000-000-000-651 ...
Lamont-Doherty Earth Observatory, Columbia University
core
Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]
, 2010 Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V. +4 more
core +1 more source
Mineralogy and Cultural Heritage
CHIMIA, 2010 In recent years there has been an escalation in the number of mineralogical studies involving cultural heritage materials. A number of factors have contributed to this exponential growth, including the shrinking budgets in traditional research fields, which forced the expansion of applications of mineralogical methods to novel research areas.
openaire +6 more sources