Workshop on Processes and Products of Deep-Sea Sediment Gravity Flows
Date: 10th August 2017
Venue: S135, Dept. of Earth Sciences, National Central University (NCU)
Sponsors: Ministry of Science and Technology, Dept. of Earth Sciences, NCU
Organizer: Andrew Tien-Shun Lin, Sedimentology and Basin Research Group, Dept. Earth Sciences, NCU
Workshop Scope & Objectives
Sediment gravity flows are major agents that deliver terrestrial sediments into the deep oceans. The erosion and deposition of sediment gravity flows shape the continental margins with canyons/gullies, channels and submarine fans, for examples. Understanding the flow processes and depositional successions of sediment gravity flows are vital for studying the deep-sea environments and for deep-water hydrocarbon exploration. In Taiwan, exposed passive-margin and deep-water turbidites are found in the South and SE part of the Central Range and in the Hengchun Peninsula, featuring turbidites deposited in the Middle to Late Miocene South China Sea continental slope and submarine fans. The Pliocene-Pleistocene coarse-grained turbidites in the Coastal Range, by contrast, were accumulated in the deformed and accreted forearc basin. The stratigraphic architecture and depositional processes for the exposed turbidites are not well understood, however. In the meantime, Taiwan government has been actively exploring gas hydrates offshore SW Taiwan, where deep-sea turbidites are major gas-hydrate reservoirs. The oil industry has recently begun to explore conventional hydrocarbons in the deep sea offshore SW Taiwan both in the accretionary wedge and in the rifted South China Sea continental margin.

Recent earthquakes and onshore floods in Taiwan also triggered various turbidity currents that brought about a few episodes of submarine cable breakages, leading to disruptions of global internet communications. An understanding of deep-water turbidites and flow processes for sediment gravity flows is therefore essential for academia, oil industry, and the government to explore the deep-water areas and to mitigate possible geo-hazards. A one-day workshop on Processes and Products of Deep-Sea Sediment Gravity Flows is scheduled with an aim to bring together geo-scientists and hydrocarbon explorers to exchange ideas on deep-water sedimentation and flow processes.

Invited speakers

1. Prof. Benjamin Kneller (Keynote speaker), University of Aberdeen (UK)
Ben is one of the world-leading experts on turbidite deposition and flow processes of sediment gravity flows.

2. Prof. Steven Yueh-Jen Lai (賴悅仁教授), National Cheng Kung University
Steven is a sediment and flow experimentalist, who uses experiments to study flow processes and bed morphodynamics.

3. Mr. Larry Syu-Heng Lai (賴序衡先生), National Taiwan University
Larry is an expert on deep-water sedimentology. He has been working on turbidite deposition of the Pliocene-Pleistocene forearc basin in the southern Coastal Range.

4. Prof. Andrew T. Lin, National Central University
Andrew is a sedimentologist and the organizer of this workshop.

Workshop Agenda



09:30 - 10:00


10:00 - 10:05

Opening/Welcome Remarks

10:05 - 11:00

Deepwater Sediment Gravity Flow Processes and Products
Prof. Ben Kneller (奈勒教授)
Dept. of Geology and Petroleum Geology, University of Aberdeen, UK

11:00 - 12:00

Experiments of Submarine Canyons and Braided Turbidites
Prof. Steven Yueh-Jen Lai (賴悅仁教授)
Dept. of Hydraulic and Ocean Engineering, National Cheng Kung University

12:00– 13:30


13:30 – 14:30

Deepwater System Architecture
Prof. Ben Kneller (奈勒教授)
Dept. of Geology and Petroleum Geology, University of Aberdeen, UK

14:30 – 15:00

Use and Misuse of Deepwater Analogues
Prof. Ben Kneller (奈勒教授)
Dept. of Geology and Petroleum Geology, University of Aberdeen, UK

15:00 – 15:30


15:30 – 16:00

An Introduction to Turbidites in the Deformed Retrowedge Foredeep Basin, Coastal Range of Eastern Taiwan
Mr. Larry Syu-Heng Lai (賴序衡先生)
Dept. of Earth Sciences, University of Oregon and Dept. of Geosciences, National Taiwan University

16:00 – 17:00

Turbidites in Compressional and Extensional Tectonic Settings: Examples from the Northern Manila Subduction Zone and the Southern Okinawa Trough
Prof. Andrew Tien-Shun Lin (林殿順教授)
Dept. of Earth Sciences, National Central University

17:00 – 17:30

Wrap-up Discussion



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