Holocene relative sea-level changes on the margin of a glacio-isostatically uplifted area: an example from northern Caithness, Scotland
Holocene relative sea-level changes on the margin of a glacio-isostatically uplifted area: an example from northern Caithness, Scotland
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冰川均衡隆起地区边缘的全新世相对海平面变化：苏格兰凯斯内斯北部的一个例子
DOI：
10.1177/095968369700700106
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
David E. Smith
中科院分区：
文献类型：
--
作者：
Sue Dawson;David E. Smith
证据全新世相对海平面变化的边缘冰川均衡隆起区：较低的威克河流域，北方凯斯内斯，苏格兰。对碎屑岩和有机质夹层沉积物的岩石地层学、生物地层学和年代地层学分析揭示了相对海平面从至少低至-3.6 m到+1.5 m O.D.的快速上升的证据。在中全新世，达到高潮之间的c。6900和C。5900 BP。这与苏格兰东部广泛发现的主要冰后期海侵有关。在随后的海退之后，沉积物记录了从c. 4400和C。1200 BP。晚全新世河口沉积物作为最高的全新世海洋沉积物的存在是一种情况，只记录在苏格兰大陆的另一个网站的日期。沿海沉积物序列也表明了发生在公元前200年至公元前200年之间的古海啸的证据。7300和C。7000 BP，并与第二Storegga幻灯片，世界上最大的海底沉积物幻灯片之一，位于挪威西部的大陆坡。
Evidence is presented for Holocene relative sea-level changes on the margin of a glacio-isostatically uplifted area: the lower Wick River valley, northern Caithness, Scotland. Lithostratigraphic, biostratigraphic and chronostratigraphic analyses of intercalated clastic and organic sediments disclose evidence for a rapid rise of relative sea level from at least as low as -3.6 m to +1.5 m O.D. during the mid-Holocene, culminating between c. 6900 and c. 5900 BP. This is correlated with the Main Postglacial Transgression, identified widely in eastern Scotland. Following a subsequent regression, the sediments record two further marine transgressions beginning at c. 4400 and c. 1200 BP. The presence of late-Holocene estuarine deposits as the highest Holocene marine sediments is a situation only recorded to date at one other site in mainland Scotland. The coastal sediment sequence also indicates evidence for a palaeotsunami that occurred at between c. 7300 and c. 7000 BP and was associated with the Second Storegga Slide, one of the world's largest submarine sediment slides, located on the continental slope west of Norway.