Sedimentology of the Minoan deep-sea tephra layer in the Aegean and Eastern Mediterranean

Sparks, R. S. J.; Brazier, S.; Huang, T. C.; Muerdter, David R.

doi:10.1016/0025-3227(83)90011-7

Cited by 40 publications

(21 citation statements)

References 43 publications

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“…However, we observed no visible correlative ash layer among Holes 842A, 842B, and 843C. Sparks et al (1984) showed that ash-layer disturbance depends on the sedimentation rate, hence the original thickness of ash layers is significantly different among these holes. The distance between Holes 842A and 842B is small, which indicates that these ash layers were not deposited by a simple air-fall process.…”

Section: Disturbance Of Bioturbationcontrasting

confidence: 55%

Sedimentary Processes of Volcaniclastic Sediments, Leg 136

Naka¹,

Tsugaru²,

Danhara³

et al. 1993

Proceedings of the Ocean Drilling Program

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Sediment cores recovered from three holes drilled during Ocean Drilling Program Leg 136 include volcaniclastics probably derived from the Hawaiian islands. The volcaniclastics shallower than 10 meters below seafloor are fresh and are composed of basaltic glass (sideromelane), basaltic fragments (mainly tachylite), Plagioclase, olivine, pyroxene, and opaque minerals. Most of these glasses are probably products of hydrovolcanism. Visibly, some of these volcaniclastics are recognized as bedded ash layers having thicknesses that range from 5 to 10 cm. However, many volcaniclastics are disrupted by bioturbation to some degree, and are sometimes totally mixed with ambient brown clays. No visible correlative ash layer among these holes was found. It seems that many ash layers thinner than the bedded layers were disrupted by bioturbation because of the low sedimentation rate of volcaniclastics.The volcaniclastics were probably transported one of two ways: through air fall and pelagic settling or through turbidity-current transport. Other archipelagic apron volcaniclastic sediments of volcanic seamounts suggest that turbidite transport is the favored explanation of origin.

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Section: Disturbance Of Bioturbationcontrasting

confidence: 55%

Sedimentary Processes of Volcaniclastic Sediments, Leg 136

Naka¹,

Tsugaru²,

Danhara³

et al. 1993

Proceedings of the Ocean Drilling Program

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show abstract

“…Fine-grained material was observed at the base of the slopes that typically becomes coarser with scattered lapilli, small pumice rocks and talus toward the upper slopes and summits. In addition, several analysis of push cores from the Minoan tephra layer from Santorini at similar water depths have documented hemipelagic sediment accumulation rates on the order of several centimeters per thousand years (Sparks et al, 1983). Thus the presence of extensive sediment covers indicates the lack of very recent volcanic activity in any of the cones except for Kolumbo.…”

Section: Discussionmentioning

confidence: 99%

Submarine volcanoes of the Kolumbo volcanic zone NE of Santorini Caldera, Greece

Nomikou

Carey

Papanikolaou

et al. 2012

Global and Planetary Change

114

106

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“…The clearest pyroclastic units are below regional reflection A and thus predate the Thera Pyroclastic Formation: they are 20 -30 ms thick, close to the limits of resolution of the Meteor seismic profiles. Thick marine pyroclastic deposits of the Thera Pyroclastic Formation lie to the south of Santorini (Sparks et al 1983;Anastasakis 2007).…”

Section: Discussionmentioning

confidence: 99%

Distribution and chronology of submarine volcanic rocks around Santorini and their relationship to faulting

Piper

Pe‐Piper

Perissoratis

et al. 2007

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Seismic reflection profiles from the marine areas around Santorini in the south Aegean arc show the distribution of active faults and the occurrence of submarine volcanic rocks interfingering with stratified basinal sediment. Santorini is located at the intersection of fault sets of different ages. To the west, active faults trend east-west, whereas to the east, active faults trend ENE-WSW and a slightly older set of faults trends NE-SW. Subsurface submarine volcanic rocks can be dated using ages estimated for the stratified basin sediments elsewhere in the Milos-Christiani Basin. Volcanic horizons off Santorini correlate with the main (young) Akrotiri (0.65-0.55 Ma) and old Akrotiri (1.6 ka) volcanic episodes, respectively. Off Christiani, the upper unit of volcanic rocks is of similar age to the young Akrotiri episode and the lower volcanic unit is likely to be of latest Pliocene age. Late Neogene basin subsidence and volcanism are a consequence of changing patterns of faulting resulting from the collision of the African and Aegean-Anatolian plates.

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Sedimentology of the Minoan deep-sea tephra layer in the Aegean and Eastern Mediterranean

Cited by 40 publications

References 43 publications

Sedimentary Processes of Volcaniclastic Sediments, Leg 136

Sedimentary Processes of Volcaniclastic Sediments, Leg 136

Submarine volcanoes of the Kolumbo volcanic zone NE of Santorini Caldera, Greece

Distribution and chronology of submarine volcanic rocks around Santorini and their relationship to faulting

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