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Horizons in Earth Science Research - Volume 16 (Hardcover)
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Horizons in Earth Science Research - Volume 16 (Hardcover)
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Chapter one reports the results of a radiometric survey performed
at the main installations of DPM-Department of Petrology and
Metallogeny of IGCE-Institute of Geosciences and Exacts Sciences
belonging to UNESP, Rio Claro (SP), Brazil, whose major task has
been to realise researches with crystalline rocks. The acquired
dataset is presented and discussed in terms of possible
implications for human health. Chapter two aims to map the spatial
distribution of various land cover types at the surface of the
Ghuwaymid sabkha using L1B ASTER data. Chapter three discusses if
the zone of shearing is treated as a separate layer (Layer of
Lateral Anisotropy and Mass Advection, LLAMA), it can remain
isolated from the convecting mantle but be only partially attached
to the overlying plate. As such it may serve as a long-lived
shallow source for intraplate volcanism if it undergoes suitable
metasomatic enrichment. Chapter four applies statistical and
geochemical modelling techniques to an extensive major and trace
element composition database for 86 samples from eight outcrops. A
statistical comparison scheme applied to diverse geochemical ratios
discards a genetic link between San Felipe volcanic ashes and
regional contemporary magmatic localities. In Chapter five,
Subsidence dolines are described. Additionally, the morphological
environment of subsidence dolines of glaciokarst, the bearing
cover, their size, their morphology and features of their activity
are characterised. Chapter six provides new insight into the
formation of high-grade precious-metal ores in low-sulfidation
deposits. The chapter presents textural evidence for formation of
electrum flocs in a boiling environment under epithermal
conditions. Chapter seven suggests that a large low shear velocity
province beneath Columbia would have triggered mantle plumes after
the arrival of 2.0 Ga to 1.8 Ga active subducting slabs in the
lower mantle. Columbia breakup attempt could have been started in
such Large Igneous Provinces regions, where rifting processes may
have occurred. Finally, Chapter eight examines what we define as
legally relevant "outer space" and who has legal competence in
space to begin with? These issues are considered in regard to
potential outer space warfare: its legality, pros and cons, as well
as its probability.
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