کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4467709 1622277 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sea-level rise and coral-reef development of Northwestern Luzon since 9.9 ka
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Sea-level rise and coral-reef development of Northwestern Luzon since 9.9 ka
چکیده انگلیسی

Coral reef growth and relative sea-level record for the early mid-Holocene are established from three boreholes drilled on a raised Holocene reef at Currimao, northwestern Luzon, Philippines. Age control is provided by 230Th dates of 13 corals mostly in living position. The cores cover a depth interval from 3.8 m above to 26.7 m below present mean sea level (MSL) and consist of four lithofacies including (1) reef facies, (2) bioclastic facies, (3) clayey facies and (4) tuffaceous facies. The ages of dated corals vary from 6588 ± 27 ya at 1.4 m below MSL to 9855 ± 42 ya at 22 m below MSL. Results of this study indicate that the reef started growing about 9.9 ka when the minimum sea level, relative to the western Luzon coast, was about 27 m below MSL after tectonic correction. During 9.2–8.2 ka, reef accretion rate was as high as 10–13 m/ky. Coral reef developed to near paleo-sea level at about 6862 ± 28 ya and emerged due to tectonic uplift. The sea-level curve of Currimao is generally similar to that of the Western Australia coast but at least 8–11 m higher than that of Tahiti from 10 to 8.5 ka.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 292, Issues 3–4, 15 June 2010, Pages 465–473
نویسندگان
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