Giant blocks in the South Kona landslide, Hawaii

Moore, James G.; Bryan, W. B.; Beeson, Melvin H.; Normark, William R.

doi:10.1130/0091-7613(1995)023<0125:gbitsk>2.3.co;2

Cited by 63 publications

(45 citation statements)

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“…On La Palma, this type-zone includes a well-developed drainage network, which consists of flat-bottom channels up to 2.5 km wide. On the distalmost sectors off El Hierro and La Palma, numerous hummocks up to 300 m high and 2 to 2.5 km in diameter are present, showing noteworthy similarities to those described on the base of other volcanic islands, such as Hawaii and La Reunion (Moore et al, 1995;Lenat et al, 1989).…”

Section: Geomorphology and Acoustic Character Of The Submarine-subaermentioning

confidence: 63%

Flank stability and processes off the western Canary Islands: a review from El Hierro and La Palma

Úrgeles¹,

Canals²,

Masson³

2001

Sci. Mar.

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SUMMARY: The morphological characterisation of the western submarine island flanks of El Hierro and La Palma differentiates four type-zones that may give new insights into the evolution of oceanic island slopes. The different type-zones result from the interplay between constructive volcanic processes, hemipelagic settling and volcano collapses. The latter results in massive debris avalanche deposits, which form large volcaniclastic aprons. In most cases, the headwall scarps are clearly exposed on the emerged part of the islands. The events that occurred in the youngest and westernmost islands of El Hierro and La Palma have vertical runouts exceeding 6,000 m and volumes that can reach several hundred km 3 . The landslide frequency for the entire Canaries is one major event per 90 ka. Triggering mechanisms are closely related to magmatic processes. The increase in the shear stress is directly linked with the forceful intrusion of magma along "ridge-rift" systems, while in the western Canary Islands it seems that the main process reducing shear resistance may be related to the rise in pore pressure due to hydrothermal circulation.

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Section: Geomorphology and Acoustic Character Of The Submarine-subaermentioning

confidence: 63%

Flank stability and processes off the western Canary Islands: a review from El Hierro and La Palma

Úrgeles¹,

Canals²,

Masson³

2001

Sci. Mar.

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“…Alternatively, intrusive rocks once present in this region were removed by catastrophic landsliding [Lipman et al, 1988[Lipman et al, , 1990. The large body of increased velocity along the southern edge of profile FF 0 (Figure 9d, 55-70 km) may represent a buried landslide block derived from this rift zone, similar to the giant landslide blocks found offshore of Mauna Loa's western flank [Lipman et al, 1988;Moore et al, 1995].…”

Section: Mauna Loa Volcanomentioning

confidence: 94%

Volcano‐tectonic implications of 3‐D velocity structures derived from joint active and passive source tomography of the island of Hawaii

Park¹,

Morgan²,

Zelt³

et al. 2009

J. Geophys. Res.

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[1] We present a velocity model of the onshore and offshore regions around the southern part of the island of Hawaii, including southern Mauna Kea, southeastern Hualalai, and the active volcanoes of Mauna Loa, and Kilauea, and Loihi seamount. The velocity model was inverted from about 200,000 first-arrival traveltime picks of earthquakes and air gun shots recorded at the Hawaiian Volcano Observatory (HVO). Reconstructed volcanic structures of the island provide us with an improved understanding of the volcano-tectonic evolution of Hawaiian volcanoes and their interactions. The summits and upper rift zones of the active volcanoes are characterized by high-velocity materials, correlated with intrusive magma cumulates. These high-velocity materials often do not extend the full lengths of the rift zones, suggesting that rift zone intrusions may be spatially limited. Seismicity tends to be localized seaward of the most active intrusive bodies. Low-velocity materials beneath parts of the active rift zones of Kilauea and Mauna Loa suggest discontinuous rift zone intrusives, possibly due to the presence of a preexisting volcanic edifice, e.g., along Mauna Loa beneath Kilauea's southwest rift zone, or alternatively, removal of high-velocity materials by large-scale landsliding, e.g., along Mauna Loa's western flank. Both locations also show increased seismicity that may result from edifice interactions or reactivation of buried faults. New high-velocity regions are recognized and suggest the presence of buried, and in some cases, previously unknown rift zones, within the northwest flank of Mauna Loa, and the south flanks of Mauna Loa, Hualalai, and Mauna Kea.

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“…Los depósitos fueron el producto de avalanchas, flujos de detritos y flujos hiperconcentrados, y se desarrollaron sobre superficies marcadamente erosivas labradas en depósitos del sistema de depositación regional. Estos procesos son característicos de los aparatos volcánicos en escudo, en los que resultan frecuentes los fenómenos de colapso (Moore et al, 1995;Masson et al, 2002) La interposición de cuerpos de ambos sistemas de depositación indica que los materiales de la asociación de facies A fueron prácticamente 'volcados' o 'vertidos' sobre los del sistema fluvial integrado y los de las planicies, y se desarrollaron sobre cicatrices erosionales labradas al pie de los taludes del relieve volcánico intracuencal (Fig. 10).…”

Section: Modelo De Acumulaciónunclassified

Procesos gravitacionales-fluviales y preservación de vegetación boscosa en un área volcánica: Formación Rancahué (Oligoceno), Andes neuquinos, Argentina

Spalletti

Veiga

Franzese

2013

Andgeo

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Giant blocks in the South Kona landslide, Hawaii

Cited by 63 publications

References 0 publications

Flank stability and processes off the western Canary Islands: a review from El Hierro and La Palma

Flank stability and processes off the western Canary Islands: a review from El Hierro and La Palma

Volcano‐tectonic implications of 3‐D velocity structures derived from joint active and passive source tomography of the island of Hawaii

Procesos gravitacionales-fluviales y preservación de vegetación boscosa en un área volcánica: Formación Rancahué (Oligoceno), Andes neuquinos, Argentina

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