Sequence stratigraphy of the lower Upper Cretaceous (Upper Cenomanian - Turonian) of the Eastern Desert, Egypt
Sequence stratigraphy of the lower Upper Cretaceous (Upper Cenomanian - Turonian) of the Eastern Desert, Egypt
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埃及东部沙漠上白垩统下层（上塞诺曼阶 - 图伦阶）层序地层
DOI：
10.1127/0078-0421/2013/0030
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发表时间：
2013
影响因子：
2.2
通讯作者：
Wilmsen
中科院分区：
文献类型：
--
作者：
Wilmsen
东部沙漠（埃及）的四个上塞诺曼—土尔onian剖面在新特提斯的南缘从北部的瓦迪阿拉巴（Wadi Araba）到南部的瓦迪Qena （Wadi Qena）形成了一个130公里的远-近样带，已经应用综合地层学方法进行了详细的研究。浅海相地层主要包括Galala组、Maghra El Hadida组和Umm Omeiyid组，它们代表了在晚白垩世早期的大海侵中发育的混合碳酸盐-硅屑斜坡环境。通过样带对层序地层的关键面和体系域进行了识别和追踪，从而对层序地层进行了详细的细分。在横向上识别并追踪了6个沉积不整合面（塞诺曼期层序界SB Ce 4和5、土鲁统层序界SB Tu 1 ~ 4），确定了5个三级沉积层序（DS ED 1 ~ 5）。DS - ED - 1为中晚期格诺曼尼亚期，其特征是在大陆沉积（Malha组和Naqus组）之上沉积了泻湖盖拉拉组。层序DS ed2的基底层序边界以北部的Galala - maghra El Hadida组接触带（Wadi Araba）和Wadi Qena的Galala组内的地层缺口（Metoicoceras geslinium带缺失）为代表。这一主要不整合（sbce5）可以精确地定年为中晚期的Cenomanian （Neolobites vibrayeanus至Metoicoceras geslinium的带边界）。DS ED 2包括中上塞诺曼期至下Turonian期，并包括下Turonian期的一个主要最大淹没面。下-中Turonian边界段（SB Tu 1）有明显的不整合，形成了DS ED 3的基底。下中Turonian层序包括Wadi Araba的Maghra El Hadida组中段和Wadi Qena的Umm Omeiyid组下部。DS ED 4以研究区北部的Maghra El Hadida组上部和南部的Umm Omeiyid组中部为代表，以中- Turonian SB Tu 2为基础圈定。其末端不整合面、下上Turonian不整合面SB图3和上Turonian不整合面SB图4位于上覆Matulla和Taref组底部(上Turonian？（coniian - sanantonian）定义了最后的Turonian序列，DS ED 5。对在东部沙漠发现的层序边界的序列校准显示，与西奈、约旦、突尼斯、欧洲和阿拉伯板块的等效表面具有同时代性，因此有力地支持了塞诺曼-图尔尼期不整合和由海平面上升变化引起的夹层沉积序列的等时形成。
Four Upper Cenomanian–Turonian sections of the Eastern Desert (Egypt) forming a 130-km distal–proximal transect at the southern margin of the Neotethys from Wadi Araba in the north to Wadi Qena in the south have been studied in great detail applying an integrated stratigraphic approach. The predominantly shallow-marine successions comprise the Galala, Maghra El Hadida and Umm Omeiyid formations which represent a mixed carbonate–siliciclastic ramp setting developing in response to the great early Late Cretaceous transgression. Sequence stratigraphic key surfaces and systems tracts have been identified and tracked across the transect, resulting in a detailed sequence stratigraphic subdivision. Six sedimentary unconformities (Cenomanian sequence boundaries SB Ce 4 and 5, and Turonian sequence boundaries SB Tu 1–4) have been recognized and tracked laterally, defining five 3rd-order depositional sequences (DS ED 1–5). DS ED 1 is of latest Middle to mid-Late Cenomanian age and characterized by the deposition of the lagoonal Galala Formation on top of continental deposits (Malha and Naqus formations). The basal sequence boundary of sequence DS ED 2 is represented by the Galala–Maghra El Hadida formational contact in the north (Wadi Araba) and a stratigraphic gap within the Galala Formation in Wadi Qena (Metoicoceras geslinianum Zone missing). This major unconformity (SB Ce 5) can be precisely dated as mid-Late Cenomanian (Neolobites vibrayeanus to Metoicoceras geslinianum zonal boundary). DS ED 2 comprises the mid-Upper Cenomanian to Lower Turonian and includes a major maximum flooding surface within the lower Lower Turonian. It is capped by a conspicuous unconformity in the Lower–Middle Turonian boundary interval (SB Tu 1), forming the base of DS ED 3. This lower Middle Turonian sequence comprises a part of the middle portion of the Maghra El Hadida Formation in Wadi Araba and the lower part of the Umm Omeiyid Formation in Wadi Qena. DS ED 4, delineated at the base by the mid-Middle Turonian SB Tu 2, is represented by a portion of the upper part of the Maghra El Hadida Formation in the north and the middle part of the Umm Omeiyid Formation in the southern part of study area. Its terminal unconformity, lower Upper Turonian unconformity SB Tu 3, and the Upper Turonian unconformity SB Tu 4 at the base of the overlying Matulla and Taref formations (uppermost Turonian?, Coniacian–Santonian) define the last Turonian sequence, DS ED 5. A sequential calibration of the sequence boundaries identified in the Eastern Desert shows a contemporaneity to equivalent surfaces in Sinai, Jordan, Tunisia, Europe, and the Arabian Plate, thus strongly supporting an isochronous formation of Cenomanian–Turonian unconformities and intercalated depositional sequences by eustatic sea-level changes.
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南加拉拉高原（埃及东部沙漠上白垩统）塞诺曼阶-土伦阶加拉拉组和马格拉哈迪达组的沉积环境和相发育
影响因子：
1.8
作者：
M. Wilmsen;Emad Nagm
通讯作者：
Emad Nagm
西奈半岛北部中白垩世碳酸盐斜坡：层序地层和相分布
DOI：
--
发表时间：
1998
期刊：
Geological Society Special Publication
影响因子：
--
作者：
M. Bachmann;J. Kuss
通讯作者：
J. Kuss
北坎塔布连盆地塞诺曼阶至坎帕阶的层序地层学（西班牙北部坎塔布里亚）
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
F. Wiese;M. Wilmsen
通讯作者：
M. Wilmsen
碳酸盐坡道和富含有机物的陆架盆地的地层组织：阿曼北部的 Natih 组（白垩纪中期）
DOI：
--
发表时间：
2002
期刊：
影响因子：
--
作者：
F. Buchem;P. Razin;P. Homewood;W. Oterdoom;J. Philip
通讯作者：
J. Philip
塞诺曼阶-土伦阶边界周围的海平面变化
DOI：
--
发表时间：
1993
期刊：
影响因子：
--
作者：
J. Hancock
通讯作者：
J. Hancock