Tidal Effects on the Formation of
- journal_title：Geology
- Contributor：Harald Furnes ; Ingvar Birgir Fridleifsson
- Publisher：Geological Society of America
- Date：1974-
- Format：text/html
- Language：en
- Identifier：10.1130/0091-7613(1974)2<381:TEOTFO>2.0.CO;2
- journal_abbrev：Geology
- issn：0091-7613
- volume：2
- issue：8
- firstpage：381
摘要
A shallow marine volcanic delta in Iceland shows the contact between pillow lava/hyaloclastite and a capping subaerial lava flow. Across the strike of the foreset beds of the delta, this contact shows altitude variations of the order of 2 to 3 m. These variations are considered to result from high- and low-tide fluctuations in sea level during construction of the delta. These structures are of use in distinguishing between marine and non-marine volcanic deltas, to indicate tidal range, and to provide information about flow rate of the lava and, hence, a minimum time for the formation of pillow lava/hyaloclastite deltas.