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"Earth crust"
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Exploring Earth's surface
Earths surface isn't just dirt and rock. It features majestic mountains and verdant valleys, rolling rivers and violent volcanoes. Readers are whisked away on a tour of the planet and it's many fascinating landforms. They will see many of Earth's most interesting natural locations and learn how they were formed.
Book
Earth as an evolving planetary system
Earth as an Evolving Planetary System is based on Kent Condie's classic text, Plate Tectonics and Crustal Evolution, which has been revamped and renamed in order to reflect a new emphasis on the evolving interactions of the Earth's systems.
eBook
The Lithosphere
Presenting a coherent synthesis of lithosphere studies, this book covers a range of geophysical methods (seismic reflection, refraction, and receiver function methods; elastic and anelastic seismic tomography; electromagnetic and magnetotelluric methods; thermal, gravity and rheological models), complemented by petrologic and laboratory data on rock properties. It also provides a critical discussion of the uncertainties, assumptions, and resolution issues that are inherent in the different methods and models of the lithosphere. Multidisciplinary in scope, global in geographical extent, and covering a wide variety of tectonics settings across 3.5 billion years of Earth history, this book presents a comprehensive overview of lithospheric structure and evolution. It is a core reference for researchers and advanced students in geophysics, geodynamics, tectonics, petrology, and geochemistry, and for petroleum and mining industry professionals.
eBook
Structure of the Upper Part of the Earth’s Crust in the Area of the Lena River Delta: The First Magnetotelluric Data
We present the first magnetotelluric sounding (MTS) data acquired in the southern part of the Lena River delta which is a junction zone of the Siberian Craton and the Verkhoyansk fold-and-thrust belt, in the transition zone from the Eurasian Continent to the shelf of the Laptev Sea. The MTS data were used to construct a vertical section of the bulk electrical resistivity (ER) structure of the Earth’s crust down to a depth of 8 km. The upper high-resistivity layer (320–1000 Ohm m) corresponds to the permafrost rocks ranging in thickness from 1 km to 400 m under the channels of the Lena River. The underlying deformed Mesoproterozoic–Lower Triassic rocks can vary in composition, but they are poorly differentiated in ER values (110–240 Ohm m). We detected three low-resistivity anomalies (10–60 Ohm m) related to the fluid-saturated core and damage zones of active faults. A deep-lying high-resistivity anomaly (320–350 Ohm m) identified at the northeastern part of the section can correspond to the Lower Proterozoic or Archean metamorphic rocks.
Journal Article
Influence of Deformation Processes of the Earth’s Crust of Central Asia on Anomalies of Volumetric Air Radon Activity
Methods for measuring alpha radiation during radon decay have found wide application in studies related to ecology, health protection, geological and geophysical surveys, as well as the possibility of predicting deformation processes in the earth’s crust. Measuring radon levels in air and water is used to search for uranium deposits. Registration of low-intensity radiation and volumetric activity of radon seems to be a difficult task due to the insufficiently high sensitivity of detection systems. When creating instruments and devices for studying natural radioactivity, silicon detectors are widely used. The advantages of such detectors are simplicity, the ability to operate in a wide temperature range, under conditions of large flows of weakly ionizing alpha, gamma and beta radiation, and obtaining integral or averaged radon activity. Designed and manufactured highly sensitive detectors of large sizes installed in a radiometric device make it possible to measure and monitor low-intensity and low-energy radiation in various environments. The study of changes in radon concentrations in groundwater and soils can be used to predict earthquakes and destructive landslides caused by deformations of the earth’s surface. Long-term monitoring of volumetric radon activity and gamma radiation activity was carried out on the territory of the Republic of Uzbekistan (Tashkent) and a connection between radon concentration and deformation processes in the earth’s crust was identified.
Journal Article
The street beneath my feet
Constructed on one continuous folded page, this book explores the layers of the Earth from human-made structures like sewers, subways, and archeological finds, down through various formations of rock, to the Earth's core and back up again.
Book
Structure of the Earth’s Crust of the Continental Margin of the Laptev Sea and the Adjacent Part of the Eurasian Basin
A 3D model of the Earth’s crust for the continental margin of the Laptev Sea and the adjacent part of the Eurasian Basin was developed using the latest seismic and gravity data. The thickness of the consolidated part of the Earth’s crust in the study area is estimated at 7–11 km, which corresponds to a highly extended continental or oceanic crust. The formation of the basement and sedimentation in this area most likely began in the Late Jurassic. The southeastern part of the Eurasian Basin is separated from the rest of the basin by a dextral shear zone, the displacement along which during the Paleogene was more than 100 km.
Journal Article