کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9463112 | 1622406 | 2005 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Paleocene-Eocene transition at Mead Stream, New Zealand: a southern Pacific record of early Cenozoic global change
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
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چکیده انگلیسی
Compacted sedimentation rates vary between 1.4-2.7 cm/kyr for upper Paleocene-lower Eocene strata at Mead Stream. Although individual beds with average thickness of â¼10 cm were deposited too fast to directly represent cycles in orbital parameters, time series analysis of bed thicknesses suggests that groups of beds may record Milankovitch-scale periodicity, perhaps with a significant obliquity component. Thus, the relative frequency and thickness of marl and limestone beds in this section is shown to be strongly influenced by climatic changes at a wide range of temporal scales, from suborbital and orbital cycles to aberrant short-term events and long-term trends. Predominance of marl in IETM and EECO intervals indicates that episodes of extreme global warming resulted in reduced oceanic productivity and increased terrestrial discharge in the high-latitude southwestern Pacific.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 215, Issues 3â4, 6 January 2005, Pages 313-343
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 215, Issues 3â4, 6 January 2005, Pages 313-343
نویسندگان
Christopher J. Hollis, Gerald R. Dickens, Bradley D. Field, Craig M. Jones, C. Percy Strong,