Results 61 to 70 of about 25,642 (273)

Changes of Soil Chemistry Characteristics of Tephra Mount Anak Krakatau-Indonesia, Through Leaching Experiment

open access: yesJournal of Tropical Soils, 2023
Studying the weathering process in pristine volcanic materials is crucial as this process will determine further soil characteristics. Mount Anak Krakatau is reported as one of the fastest-growing volcanoes.
Astriana Rahmi Setiawati   +5 more
doaj   +1 more source

The middle Waikato Basin and hills [PDF]

open access: yes, 1992
The middle Waikato (or Hamilton) Basin is a roughly oval-shaped depression more than 80 km north to south and more than 40 km wide. The basin, except in the south, is almost completely surrounded by ranges up to 300 m high, broken by only a few gaps.
Lowe, David J., Selby, Michael J.
core   +1 more source

Pliocene-Pleistocene marine cyclothems, Wanganui Basin, New Zealand: a lithostratigraphic framework [PDF]

open access: yes, 1995
The Rangitikei River valley between Mangaweka and Vinegar Hill and the surrounding Ohingaiti region in eastern Wanganui Basin contains a late Pliocene to early Pleistocene (c. 2.6-1.7 Ma), c.
Abbott S. T.   +13 more
core   +2 more sources

A Tale of Two Shrimps—Speciation and Demography of Two Sympatric Shrimp Species From Hydrothermal Vents

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Hydrothermal vents can serve as natural laboratories to study speciation processes due to their fragmented distribution, often with geographic barriers between habitats. Two sympatric species of Rimicaris shrimps occur at vents on the Izu‐Bonin‐Mariana volcanic arc: Rimicaris loihi also occurs near Hawai’i and R.
Pierre Methou   +5 more
wiley   +1 more source

Sedimentary record of submarine gravity‐flow events in the southern Ryukyu forearc during the last 200 000 years: archive of mega‐earthquakes and tsunamis

open access: yesSedimentology, EarlyView.
ABSTRACT Despite high convergence velocity, the southern Ryukyu subduction has relatively low and sparse instrumental seismicity, in contrast with the Yaeyama Islands, hit by huge tsunamis over the last few thousand years. This study explores the potential of deep marine sediments to record past large earthquakes and tsunamis.
Nathalie Babonneau   +52 more
wiley   +1 more source

Heavy solution methord for determination of volcanic glass content in tephras and tephra-derived soils [PDF]

open access: yesSoil Science and Plant Nutrition, 1990
Abstract Volcanic glass is the most important primary mineral for the tephra-derived soils because it is the most abundant and the most weatherable among the primary minerals. The chemical properties of volcanic glass in tephras are closely related to the rock types of tephras (Kobayashi et al.
Sadao Shoji, Ichiro Yamada
openaire   +2 more sources

Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]

open access: yes, 2011
Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel   +4 more
core   +2 more sources

An ashy septingentenarian: the Kaharoa tephra turns 700 (with notes on its volcanological, archaeological, and historical importance) [PDF]

open access: yes, 2014
Most of us are aware of the basaltic Tarawera eruption on 10th June 1886: the high toll on life (~120 people), landscape devastation, and loss of the Pink and White Terraces.
Lowe, David J., Pittari, Adrian
core   +1 more source

Neogene paleoceanography of the eastern equatorial Pacific based on the radiolarian record of IODP drill sites off Costa Rica [PDF]

open access: yes, 2017
The Integrated Ocean Drilling Program (IODP) Expedition 344 drilled cores following a transect across the convergent margin off Costa Rica. Two of the five sites (U1381 and U1414) are the subject of the present study.
Baumgartner, Peter O.   +3 more
core   +1 more source

Origin and significance of ice‐rafted detritus in the Atlantic sector of the Southern Ocean

open access: yesGeochemistry, Geophysics, Geosystems, 2007
Piston core TN057‐14 from the eastern Atlantic sector of the Southern Ocean contains several layers rich in volcanic tephra that were deposited during the last glacial period.
Simon H. H. Nielsen   +4 more
doaj   +1 more source

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