Results 51 to 60 of about 10,401 (241)

Pyroxene spectroscopy revisited: Spectral-compositional correlations and relationship to geothermometry. [PDF]

, 1991
Pyroxene reflectance and transmittance spectra have been examined in a search for systematic relationships between spectral features and compositional variations and to assess the applicability of reflectance spectroscopy to pyroxene geothermometry ...
Cloutis, Edward A., Edward A. Cloutis, Michael J. Gaffey, Gaffey, Michael J.   +3 more
core   +1 more source

A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis

Archaeometry, EarlyView.
ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean, Michela Spataro, Jonathan Taylor, Gianfranco Ulian, Giovanni Valdré, Gabriele Giacosa, Eleonora Mariani, Nicolò Marchetti   +7 more
wiley   +1 more source

The Geology and Lamongan Volcanic Rocks Case Study at Ranu Pakis, Klakah, Lumajang, East Java Province, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2019
Lamongan volcano is one of the unique volcanoes in the Sunda Volcano. This volcano has side eruption centers or on the slopes of the volcano. The morphology of parasitic eruptions in this volcanoes complex includes maars and boccas.
Dwi Fitri Yudiantoro, Ramonada Taruna Perwira, Muchamad Ocky Bayu Nugroho   +2 more
doaj   +1 more source

Near‐infrared Spectra of Lunar Ferrous Mineral Mixtures

Earth and Space Science, 2021
Iron‐bearing minerals are a major component of materials on the lunar surface, and many of them can be distinguished based on the diagnostic absorption features in visible and near‐infrared reflectance spectra.
Xunyu Zhang, Edward Cloutis
doaj   +1 more source

Yamato-8451: A newly identified pyroxene-bearing pallasite

, 1995
P(論文)Yamato-8451 is an unusual meteorite which is newly identified as a pyroxene-bearing pallasite. It consists mainly of Fe-Ni metal, olivine and pyroxene, and shows a porphyritic texture typical of most olivine, the same texture as that of all known ...
Yanai, Keizo, Kojima, Hideyasu
core   +1 more source

Learning Across the Divide: Understanding Knowledge Sharing Through Petrographic Analysis on Ceramics From the Rhine‐Meuse Delta During the Middle to Late Neolithic Transition (3400–2200 bce)

Archaeometry, EarlyView.
ABSTRACT Vlaardingen (VL) communities on the Dutch West coast (3400–2200 bce) are part of a unique, long‐term continuity in the European Neolithic. Despite large‐scale changes in European populations during the Neolithic, the genomic diversity and cultural practices of VL communities can be retraced to the Mesolithic.
Jisca de Bruin, Erik Kroon, Lasse van den Dikkenberg, Dennis Braekmans   +3 more
wiley   +1 more source

Contrasted Effect of Spinel and Pyroxene on Molecular Hydrogen (H2) Production during Serpentinization of Olivine

, 2021
Serpentinization produces molecular hydrogen (H2) and hydrocarbons that can feed the colonies of microbes in hydrothermal vent fields, and therefore serpentinization may be important for the origins of life. However, the mechanisms that control molecular
Huang, Ruifang, Xing Ding, Ding, Xing, Ruifang Huang, Xiuqi Shang, Weidong Sun, Sun, Weidong, Shang, Xiuqi   +7 more
core   +1 more source

Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer, Christopher L. Kirkland, Hugo Olierook, Tim Johnson, Katy Evans   +4 more
wiley   +1 more source

Petrology and geochemistry of Granitoids at Khanchay-Aliabad region, Tarom sub-zone, East of Zanjan [PDF]

پترولوژی, 2018
Khanchay-Aliabad area as a part of Tarom magmatic belt contains some shallow depth intrusions which are intruded the Eocene volcanic- sedimentary rocks and have very close association with Cu mineralization. The Eocene volcanic- sedimentary rocks include
Arefeh Saiedi, Mir Ali Asghar Mokhtari, Hossein Kouhestani   +2 more
doaj   +1 more source

Fig. 4 Quartz/Pyroxene ratio in Hole 162-983A

, 2015
Fig.
Ian R Hall (6965300), Hall, Ian R, Lukas Jonkers (7432196), Jonkers, Lukas, Barker, Stephen, Maarten A Prins (6959687), Prins, Maarten Arnoud, Stephen Barker (6968729)   +7 more
core   +1 more source