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Erdbebenkatalog Thüringen und angrenzende Gebiete von 841 bis 2017
Get PDF„Erdbeben in Thüringen und angrenzenden Gebieten“ ist eine Zusammenstellung der Erdbebentätigkeit von 841 bis 2017 im genannten Gebiet. Es zeigt sich deutlich eine sehr unterschiedliche Verteilung der Beben, denen ausgewählte geologischen Störungen zugrunde liegen. Eine Aufteilung in vier seismische Regionen nach Neunhöfer (2009) beschreibt diese unterschiedlich auftretende Seismizität
Erdbebenkatalog Thüringen und angrenzende Gebiete von 841 bis 2020
Get PDF„Erdbebenkatalog Thüringen und angrenzende Gebiete“ ist eine Zusammenstellung der Erdbebentätigkeit von 841 bis 2020 im genannten Gebiet. Damit wird für dieses Gebiet ein schneller Überblick über die Seismizität ermöglicht. In dieser, nunmehr letzten Ausgabe, wurden die bekannten historischen seismischen Ereignisse mit Rücksicht auf eine neue Quelle auf einen neuen Stand gebracht. Die Verteilung der Erdbeben, so zeigt sich, folgt ausgewählten geologischen Störungen. Sie rechtfertigt die Aufteilung des Untersuchungsgebietes in vier seismische Regionen
Calcareous nannofossils in ODP Sites 135-840 and 135-841
No full textOcean Drilling Program Leg 135 drilled at two sites on the Tonga Ridge. Calcareous nannofossils recovered at Site 840 on the Tonga Ridge date the sedimentary sequence as late Pleistocene or Holocene (CN15) through late Miocene (CN9) in age. A hiatus occurs in the mid Pliocene. Site 841 in the Tonga Trench yielded a sedimentary sequence with nannofossils from middle Pleistocene Subzone CN14b through the middle or late Eocene Subzones CP14a-CP15b overlying a rhyolitic volcanic basement. Part of the Eocene interval contains the shallow-water nannofossil taxa Braarudosphaera, Micrantholithus, and Pemma. A major unconformity separates lower Oligocene Zone CP 16 from lower middle Miocene Zone CN4 strata
Inscriptions 830 à 841
No full textInscriptions 830 à 841. In: Revue épigraphique du Midi de la France, tome 3, N°59, 1890. pp. 49-54
Description of study population (n = 841).
No full text<p>*data may not add to 841 due to missing data</p><p>Description of study population (n = 841).</p
Anderson, Shadrach Alexander, 841
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/368474Surname: ANDERSON
Given Name(s) or Initials: SHADRACH ALEXANDER
Military Service Number or Last Known Location: 841
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 56208178519
Item: [2016.0049.00804] "Anderson, Shadrach Alexander, 841
Sedimentary and subsidence history of ODP Sites 135-840 and 135-841
No full textSedimentary sections recovered from the Tonga platform and forearc during Ocean Drilling Program Leg 135 provide a record of the sedimentary evolution of the active margin of the Indo-Australian Plate from late Eocene time to the Present. Facies analyses of the sediments, coupled with interpretations of downhole Formation MicroScanner logs, allow the complete sedimentary and subsidence history of each site to be reconstructed. After taking into account the water depths in which the sediments were deposited and their subsequent compaction, the forearc region of the Tofua Arc (Site 841) can be seen to have experienced an initial period of tectonic subsidence dating from 35.5 Ma. Subsidence has probably been gradual since that time, with possible phases of accelerated subsidence, starting at 16.2 and 10.0 Ma. The Tonga Platform (Site 840) records only the last 7.0 Ma of arc evolution. However, the increased accuracy of paleowater depth determinations possible with shallow-water platform sediments allows the resolution of a distinct increase in subsidence rates at 5.30 Ma. Thus, sedimentology and subsidence analyses show the existence of at least two, and possibly four, separate subsidence events in the forearc region.
Subsidence dating from 35.5 Ma is linked to rifting of the South Fiji Basin. Any subsidence dating from 16.2 Ma at Site 841 does not correlate with another known tectonic event and is perhaps linked to localized extensional faulting related to slab roll back during steady-state subduction. Subsidence from 10.0 Ma coincides with the breakup of the early Tertiary Vitiaz Arc because of the subduction polarity reversal in the New Hebrides and the subsequent readjustment of the plate boundary geometry. More recently, rapid subsidence and deposition of a upward-fining cycle from 5.30 Ma to the Present at Site 840 is thought to relate to rifting of the Lau Basin. Sedimentation is principally controlled by tectonic activity, with variations in eustatic sea level playing a significant, but subordinate role. Subduction of the Louisville Seamount Chain seems to have disrupted the forearc region locally, although it had only a modest effect on the subsidence history and sedimentation of the Tonga Platform as a whole
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