Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/0609171618917155 |
Facies and architecture of riverdominated to tide-influenced mouth bars in the lower Lajas Formation (Jurassic), Argentina | |
Kurcinka, Colleen1; Dalrymple, Robert W.1,2; Gugliotta, Marcella3 | |
2018-05-01 | |
发表期刊 | AAPG BULLETIN |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2018 |
卷号 | 102期号:5页码:885-912 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Japan |
英文摘要 | The Middle Jurassic Lajas Formation in the Neuquen Basin of Argentina has been considered an ideal analog for tide-dominated deposits because of the widespread presence of tidal sedimentary structures and its heterolithic nature. Outcrops of the Lajas in the Los Molles area provide excellent exposures allowing both sedimentary structures and large-scale architectural information to be documented in detail. The extensive event bed stratification that characterizes the delta front and interdistributary bay deposits is interpreted to be the result of river floods because of the sharp base, fining-upward grain size trend, and seaward-directed paleo-current indicators within each bed. The absence of wave-generated structures precludes a storm wave origin for these beds. Interflood deposits have two forms. The first is fine-grained sandstone and siltstone that is highly bioturbated with no tidal structures and is indicative of an overall river-dominated system. The second is also finer grained than the river flood beds but shows distinctive tidal features, indicative of a tide-influenced system during times when river influence was least. Mouth bars can be classified as purely river-dominated or river-dominated with tidal influence, depending on the type of interflood beds present. Tide-influenced mouth bars tend to be muddier, with more internal flow baffles or barriers and a lower-angle dip than their river-dominated counterparts. This study suggests that heterolithic successions containing pervasive tidal structures need not be tide-dominated because not all tidal structures are of equal importance in environmental interpretations. Their location (in river flood layers versus interflood layers) can be used as a methodology for determining the dominant and subordinate processes responsible for shaping the delta. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445703700006 |
WOS关键词 | FERRON SANDSTONE MEMBER ; WEST-CENTRAL ARGENTINA ; RIVER-DOMINATED DELTA ; SOUTH NEUQUEN BASIN ; PANTHER TONGUE ; SEQUENCE STRATIGRAPHY ; HALTEN TERRACE ; SHELL CONCENTRATIONS ; MID-NORWAY ; CUYO GROUP |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24445 |
专题 | 地球科学 |
作者单位 | 1.Queens Univ, Dept Geol Sci & Geol Engn, Kingston, ON K7L 3N6, Canada; 2.Queens Univ, Kingston, ON, Canada; 3.Geol Survey Japan, Natl Inst Adv Ind Sci & Technol, Cent 7,Higashi 1-1-1, Tsukuba, Ibaraki 3058567, Japan |
推荐引用方式 GB/T 7714 | Kurcinka, Colleen,Dalrymple, Robert W.,Gugliotta, Marcella. Facies and architecture of riverdominated to tide-influenced mouth bars in the lower Lajas Formation (Jurassic), Argentina[J]. AAPG BULLETIN,2018,102(5):885-912. |
APA | Kurcinka, Colleen,Dalrymple, Robert W.,&Gugliotta, Marcella.(2018).Facies and architecture of riverdominated to tide-influenced mouth bars in the lower Lajas Formation (Jurassic), Argentina.AAPG BULLETIN,102(5),885-912. |
MLA | Kurcinka, Colleen,et al."Facies and architecture of riverdominated to tide-influenced mouth bars in the lower Lajas Formation (Jurassic), Argentina".AAPG BULLETIN 102.5(2018):885-912. |
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