scholarly journals Fasies Sedimentasi dan Elemen Arsitektur Formasi Citalang di Desa Sidamukti, Majalengka, Provinsi Jawa Barat

2021 ◽  
Vol 22 (3) ◽  
pp. 177
Author(s):  
Abdul Fauzan Fathan Al-Hakim ◽  
Yan Rizal
Keyword(s):  
Gravity Flow ◽  
Fine Silt ◽  
Sediment Gravity Flow ◽  
Gravel Bar

Daerah Majalengka merupakan satu daerah di Jawa Barat yang sangat menarik untuk dilakukan kajian geologi baik yang berkaitan dengan sedimentologi, tektonik maupun paleontologi. Salah satu objek yang menarik untuk dikaji ulang adalah Formasi Citalang, dimana uraian tentang formasi ini masih banyak terdapat perbedaan tentang satuan batuan penyusunnya, umur dan lingkungan pengendapannya. Disini kajian tentang formasi Citalang ditinjau dari sedimentologinya.Formasi Citalang di daerah penelitian Desa Sidamukti, Kabupaten Majalengka, Provinsi Jawa Barat tersusun atas 6 satuan batuan, yaitu: perselingan batupasir dan konglomerat sisipan tuf, perselingan batupasir dan batulempung, perselingan batupasir dan konglomerat, batupasir sisipan batulanau, perselingan batupasir dan konglomerat dengan sisipan batulanau, serta perselingan batupasir dan batulanau. Dari pengukuran penampang stratigrafi lintasan terpilih didapatkan 10 litofasies yang secara keseluruhan dijumpai dalam masing-masing satuan batuan, berupa: Fine Mud  (Fm), Fine Silt Mud (Fsm), Massive Sandstone (Sm), Horizontal Sandstone (Sh), Low Angle Cross Lamination Sandstone (Sl), Ripple Cross Lamination Sandstone (Sr), Trough Cross Bed Sandstone (St), Gravel Matrix Supported Graded Bedding (Gmg), Gravel Clast Supported Graded Bedding (Gcg), Gravel Clast Supported Massive (Gcm). Elemen arsitektural yang terbentuk pada sistem pengendapan Formasi Citalang adalah  Gravel Bar and Bedforms (GB), Sandy Bedform (SB), dan Sediment Gravity Flow (SG), yang diinterpretasikan terjadi pada lingkungan pengendapan fluvial berupa sungai teranyam.Katakunci: Formasi Citalang, elemen arsitektur, fluvial, litofasies, sungai teranyam.

Causes of varied sediment gravity flow types on the Alsek Prodelta, northeast Gulf of Alaska

1988 ◽  
Vol 7 (4) ◽  
pp. 317-342 ◽  
Author(s):  
William C. Schwab ◽  
Homa J. Lee ◽  
Bruce F. Molnia
Keyword(s):  
Gulf Of Alaska ◽  
Gravity Flow ◽  
Sediment Gravity Flow

Slumping and a sandbar deposit at the Cretaceous-Tertiary boundary in the El Tecolote section (northeastern Mexico): An impact-induced sediment gravity flow

Geology ◽  
2001 ◽  
Vol 29 (3) ◽  
pp. 231 ◽  
Author(s):  
Ana R. Soria ◽  
Carlos L. Liesa ◽  
Maria Pilar Mata ◽  
José A. Arz ◽  
Laia Alegret ◽  
...  
Keyword(s):  
Gravity Flow ◽  
Sediment Gravity Flow ◽  
Northeastern Mexico

scholarly journals High frequency of sediment gravity flow events in the Var submarine canyon (Mediterranean Sea)

2009 ◽  
Vol 263 (1-4) ◽  
pp. 1-6 ◽  
Author(s):  
Alexis Khripounoff ◽  
Annick Vangriesheim ◽  
Philippe Crassous ◽  
Joel Etoubleau
Keyword(s):  
Mediterranean Sea ◽  
High Frequency ◽  
Submarine Canyon ◽  
Gravity Flow ◽  
Sediment Gravity Flow

Recognizing tide- and wave-dominated compound deltaic clinothems in the rock record

Geology ◽  
2020 ◽  
Vol 48 (12) ◽  
pp. 1149-1153
Author(s):  
Yang Peng ◽  
Cornel Olariu ◽  
Ronald J. Steel
Keyword(s):  
Seismic Data ◽  
Three Dimensional ◽  
Gravity Flow ◽  
Small Scale ◽  
Sedimentary Record ◽  
Sediment Gravity Flow ◽  
Rock Record ◽  
Storm Wave ◽  
Tidal Deposits

Abstract Many modern deltas exhibit a compound geometry that consists of a shoreline clinoform and a larger subaqueous clinoform connected through a subaqueous platform. Despite the ubiquity of compound clinoforms in modern deltas, very few examples have been documented from the ancient sedimentary record. We present recognition criteria for shelf compound-clinoform systems in both tide- and wave-dominated deltas by integration of ancient and modern examples from multiple types of data. The compound clinothem can be identified by using a combination of: (1) the three-dimensional (3-D) configuration identified in bathymetric or seismic data, (2) bipartite stacked regressive units, consisting of a lower muddy coarsening-to-fining-upward (CUFU) or coarsening-upward (CU) unit (30–100 m thick) and an overlying sandier CU unit (5–30 m thick) (together they represent the subaqueous and shoreline clinoform pair), and (3) distinct facies described herein, though both types of delta have highly bioturbated mudstone and siltstone bottomsets. Tide-dominated deltas have muddy foresets with tidal scours containing tidal rhythmites or inclined heterolithic strata in the subaqueous clinothem overlain by river and tidal deposits of the shoreline clinothem. Wave-dominated deltas show mainly wave-enhanced sediment-gravity-flow (WSGF) beds and some thin hummocky/swaley cross-stratified (HCS/SCS) sandstones toward the top in the subaqueous muddy foreset, and upward-thickening HCS/SCS and trough/planar cross-bedded sandstones interbedded with siltstones in the shoreline clinothem. The subaqueous platform, which links the clinoform couplet, shows evidence of frequent tidal or wave reworking and redeposition. The platform in tide-dominated deltas is characterized by tide-generated heterolithic strata (e.g., bidirectional current-rippled and cross-stratified sandstones, spring and neap tidal bundles, tidal rhythmites) with occasional storm-wave–influenced strata. In contrast, the wave-dominated platform comprises small-scale swales with scours and mud clasts and some WSGF deposits. The proposed criteria can aid in the recognition of compound deltaic clinothems in other basins, particularly those with limited amounts and/or types of data.

Sediment gravity-flow deposits and three-dimensional stratigraphic architectures of the linked Cutoff, upper Bone Spring, and upper Avalon system, Delaware Basin

AAPG Bulletin ◽  
2018 ◽  
Vol 102 (09) ◽  
pp. 1703-1737
Author(s):  
Gregory S. Hurd ◽  
Charles Kerans ◽  
Edmund L. Frost ◽  
J. Antonio Simo ◽  
Xavier Janson
Keyword(s):  
Three Dimensional ◽  
Gravity Flow ◽  
Delaware Basin ◽  
Sediment Gravity Flow
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