diachronous

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diachronous
diachronous, a. (daɪˈækrənəs) [f. as diachronic a.: see -ous.] 1. Geol. Exhibiting or characteristic of diachronism (see prec., sense 1); not of a uniform geological age.1926 W. B. Wright in Rep. Brit. Assoc. 1926 355 The Haslingden Flag Marine Band was not contemporaneous in the north-east and sout... Oxford English Dictionary
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Diachronism
In geology, a diachronism (Greek dia, "through" + chronos, "time" + -ism), or diachronous deposit, is a sedimentary rock formation in which the material In academic librarianship, the adjectival form, diachronous, is used in the context of "diachronous obsolescence" to describe the reduction of usefulness wikipedia.org
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Subboreal
recession from 20 to 4%, as observed in Eifel maar pollen, has been dated in Central and Northern Europe as from 4000 years BC, but it more likely was diachronous wikipedia.org
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synchronous
synchronous, a. Chiefly scientific and technical. (ˈsɪŋkrənəs) [f. late L. synchronus, a. Gr. σύγχρονος, f. σύν syn-1 + χρόνος time: see -ous.] 1. a. Existing or happening at the same time; coincident in time; belonging to the same period, or occurring at the same moment, of time; contemporary; simu... Oxford English Dictionary
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Coihaique Group
The contact between the formations of the group are diachronous with Katterfeld Formation interfingering with the formations on top and below it. wikipedia.org
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Villafranchian
Late Villafranchian was formerly typically defined by the "Wolf event", the first appearance of Canis etruscus , but this was later considered to be diachronous wikipedia.org
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Pseudoextinction
Extirpation or regional disappearance can be a stage in pseudoextinction when progressive diachronous range contraction leads to final extinction by the wikipedia.org
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层序地层学
但岩性界面是不等时间面(diachronous)。生物地层学是按生物化石而分层。但也是不等时间面。 研究方法 与研究地震地层学相似,鉴定层序界面,划分层序地层单位。再划分沉积体系。继而分析地层岩相向上的演变和在平面上的分布。 wikipedia.org
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Mammuthus meridionalis
Steppe mammoths replaced M. meridionalis in Europe in a diachronous mosaic pattern between 1 and 0.8-0.7 million years ago. wikipedia.org
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Cura-Mallín Group
In two publications published in 1995 and 1997, Suárez and Emperan divided Cura-Mallín Formation in two diachronous members: Guapitrío and Río Pedregoso wikipedia.org
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Geological event
A geological event is a temporary and spatially heterogeneous and dynamic (diachronous) happening in Earth history that contributes to the transformation The lithostratigraphic or biostratigraphic boundaries that mark the onset and termination of geological events in the stratigraphic record may be diachronous wikipedia.org
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First appearance datum
However, diachronous FADs can be problematic for correlating chronostratigraphic units, particularly over longer distances. wikipedia.org
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Farellones Formation
It overlies the Oligo–Miocene Abanico Formation across a diachronous unconformity. In the mentioned latitudes the formation has been deformed by a diachronous tectonic inversion that produced reverse faults and destroyed the extensional wikipedia.org
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Hellenic subduction zone
The onset of subduction of southern Neotethys was diachronous, starting in the east in the latest Eocene (ca. 35 Ma), beneath Crete in the early Miocene wikipedia.org
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Dunvegan Formation
The relationship between the Dunvegan and the overlying/underlying units is diachronous and the boundaries of the Dunvegan are placed at the first and wikipedia.org
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