Reef coralgal assemblages as recorders of paleobathymetry and sea level changes in the Indo-Pacific province
Reef coralgal assemblages as recorders of paleobathymetry and sea level changes in the Indo-Pacific province
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DOI：
10.1016/s0277-3791(99)00014-1
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发表时间：
1999-01-01
影响因子：
4
通讯作者：
Ribaud-Laurenti, A
中科院分区：
文献类型：
--
作者：
Cabioch, G;Montaggioni, LF;Ribaud-Laurenti, A
在许多印度太平洋珊瑚礁的外礁边缘的珊瑚框架显示出三个主要的浅水群落，其环境意义可以通过与现代同类的比较来推断。以板状Acropora gr. hyacinthus/cytherea为优势群落，分枝有poillopora damicornis、P. eydouxi、Montipora digitata，偶有结瘤藻和mm厚的珊瑚藻壳（主要为石门和中门），典型分布于6 ~ 15 m古深度范围；一个包括粗壮分枝的Acropora gr. danai/robusta、a . humilis、a . digerfera和隶属于其的Favia stelligera、Echinopora gemmacea的群落，与vermetid腹足类动物和Hydrolithon cf. onkodes和Neogoniolithon cf.化石的厚珊瑚壳相关，生长深度小于6 m；在中高水能环境中，在深度小于10米的隐蔽生境中，一个由丘状Porites cf. lutea和P. cf. lobata组成的群落，偶有Acropora gr. danai/robusta和cm厚的珊瑚藻外壳。这些生物组合使我们能够确定珊瑚礁生长和古水深测量之间的关系，从而重建区域相对海平面曲线。高水能礁群比低水能礁群为重建海平面曲线提供了更有力的证据，因为它们通常受到一种持续增长模式的控制。下沉的珊瑚礁位置似乎是海平面变化的更可靠的指标，因为它们通常呈现扩展的珊瑚礁序列。1999爱思唯尔科学有限公司版权所有。
The coralgal framework within the outer reef margin of many Indo-Pacific reefs exhibits three main shallow-water communities, the environmental significance of which can be inferred by comparison with their modern counterparts. A community dominated by tabular Acropora gr. hyacinthus/cytherea with branching Pocillopora damicornis, P. eydouxi, Montipora digitata: occasional domal faviids and mm-thick crusts of the coralline algae Lithophyllum and Mesophyllum (mainly), typical of the 6 - 15 m paleodepth range; a community including robust-branching Acropora gr. danai/robusta, A. humilis, A. digitifera and subordinate Favia stelligera, Echinopora gemmacea, associated to vermetid gastropods and thick coralline crusts of Hydrolithon cf. onkodes and Neogoniolithon cf. fosliei flourishing in depths less than 6 m; in medium-to-high water-energy settings, a community composed of domal Porites cf. lutea and P. cf. lobata with occasional Acropora gr. danai/robusta and cm-thick crusts of coralline algae in sheltered habitats in depths less than 10 m.These biological assemblages allow us to determine relationships between reef growth and paleobathymetry and, consequently, to reconstruct regional relative sea-level curves. High water-energy reefal assemblages provide stronger evidence for reconstructing sea-level curves than low-energy buildups, because they have generally been controlled by a keep-up growth mode. Subsiding reef sites seem to be more reliable indicators of sea-level Variations because they usually present expanded reef sequences. (C) 1999 Elsevier Science Ltd. All rights reserved.