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diachronous |
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diachronous [dī′ak·rə·nəs] (geology) Of a rock unit, varying in age in different areas or cutting across time planes or biostratigraphic zones. Also known as time-transgressive. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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1998) suggested that deformation in the ensialic Welsh Basin during the Tremadoc, and subsequent formation of a late Tremadoc-Early Arenig arc, was related to diachronous Penobscotian collision and a renewed cycle of suprasubduction-zone magmatism equivalent to the Victoria arc. Synchronous versus diachronous methods in the measurement of obsolescence by citation studies. This interval reflects the diachronous nature of the transition between the granite-greenstone tectonic style of the Archean and the incipient plate-tectonic style of the Proterozoic. |
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