Thermal History of the Earth with Consideration of the Formation of Its Core

Iriyama, Jun

doi:10.4294/jpe1952.18.295

Cited by 11 publications

(1 citation statement)

References 17 publications

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“…In these models the calculated present surface heat flows are much larger than the observed heat flow. Earth models in which the core was substantially complete at 4.5 Ga ago or 3 Ga ago within a short period less than 100 Ma lead to the observed heat flow [3].…”

Section: Evolution Of the Earth's Corementioning

confidence: 89%

Interrelationships between Length of the Day, Moon Distance, Phanerozoic Geodynamic Cycles, Tidal Dissipation and Earth&#8217;s Core: Review and Analysis

Brink

2024

IJG

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The rotation of the Earth and the related length of the day (LOD) are predominantly affected by tidal dissipation through the Moon and the growth of the Earth's core. Due to the increased concentration of mass around the rotation axis of the spinning Earth during the growth of the core the rotation should have been accelerated. Controversially the tidal dissipation by the Moon, which is mainly dependent on the availability of open shallow seas and the kind of Moon escape from a nearby position, acts towards a deceleration of the rotating Earth. Measurements of LOD for Phanerozoic and Precambrian times open ways to solve questions concerning the geodynamical history of the Earth. These measurements encompass investigations of growth patterns in fossils and depositional patterns in sediments (Cyclostratigraphy, Tidalites, Stromatolites, Rhythmites). These patterns contain information on the LOD and on the changing distance between Earth and Moon and can be used as well for a discussion about the growth of the Earth's core. By updating an older paper with its simple approach as well as incorporating newly published results provided by the geoscientific community, a moderate to fast growth of the core in a hot early Earth will be favored controversially to the assumption of a delayed development of the core in an originally cold Earth. Core development with acceleration of Earth's rotation and the contemporaneous slowing down due to tidal dissipation during the filling of the ocean may significantly interrelate.

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Section: Evolution Of the Earth's Corementioning

confidence: 89%