Results 1 to 10 of about 5,763 (137)

Mangarara Formation: exhumed remnants of a middle Miocene, temperate carbonate, submarine channel-fan system on the eastern margin of Taranaki Basin, New Zealand [PDF]

open access: yes, 2009
The middle Miocene Mangarara Formation is a thin (1–60 m), laterally discontinuous unit of moderately to highly calcareous (40–90%) facies of sandy to pure limestone, bioclastic sandstone, and conglomerate that crops out in a few valleys in North ...
Armstrong BD   +25 more
core   +2 more sources

Oxygen isotope equilibrium in brachiopod shell fibres in the context of biological control [PDF]

open access: yes, 2008
No abstract ...
Chung, P.   +5 more
core   +1 more source

Soil pH governs production rate of calcium carbonate secreted by the earthworm Lumbricus terrestris [PDF]

open access: yes, 2011
Lumbricus terrestris earthworms exposed to 11 soils of contrasting properties produced, on average, 0.8 ± 0.1 mgCaCO3 earthworm−1 day−1 in the form of granules up to 2 mm in diameter.
Canti, M. G.   +5 more
core   +1 more source

Preparation of nanocrystalline quartz via high energy ball milling

open access: yesمجلة جامعة الزيتونة, 2021
The preparation of Nanocrystalline powder via high energy ball milling is drawing a considerable attention at the present time for its simplicity and relatively low cost.
Jihan Eldaour
doaj  

Location and chemical composition of microbially induced phosphorus precipitates in anaerobic and aerobic granular sludge [PDF]

open access: yes, 2012
This work focuses on combined scanning electron microscopy and energy dispersive X-ray analysis (SEM-EDX) applied to granular sludge used for biological treatment of high-strength wastewater effluents. Mineral precipitation is shown to occur in the core
Biscans, Béatrice   +3 more
core   +4 more sources

Lake sedimentological and ecological response to hyperthermals : Boltysh impact crater, Ukraine [PDF]

open access: yes, 2017
Acknowledgements Initial drilling of the Boltysh meteorite crater was funded by Natural Environment Research Council (NERC) grant NE/D005043/1. The authors are extremely grateful to the valuable scientific contributions of S. Kelley and I. Gilmour.
Andrews, Steven D.   +3 more
core   +1 more source

Using small-angle X-ray scattering to investigate the compaction behaviour of a granulated clay [PDF]

open access: yes, 2015
The compaction behaviour of a commercial granulated clay (magnesium aluminium smectite, gMgSm) was investigated using macroscopic pressure-density measurements, X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray microtomography (XμT) and ...
Aguzzi   +59 more
core   +1 more source

Transformation, partitioning and flow–deposit interactions during the run-out of megaflows [PDF]

open access: yes, 2016
Funded by BG Brasil E&P LtdaPeer ...
Fallgatter, Claus   +3 more
core   +2 more sources

Fossil trees, tree moulds and tree casts in the Palaeocene Mull Lava Field, NW Scotland: context, formation and implications for lava emplacement [PDF]

open access: yes, 2016
Megafossils and macrofossils of terrestrial plants (trees, leaves, fruiting bodies, etc.) are found in sedimentary and pyroclastic units interbedded with lavas in many ancient lava fields worldwide, attesting to subaerial environments of eruption and the
Bell, Brian R., Williamson, Ian T.
core   +1 more source

Provenance and geochemistry of exotic clasts in conglomerates of the Oligocene Torehina Formation, Coromandel Peninsula, New Zealand [PDF]

open access: yes, 2003
Non-marine pebble to cobble conglomerates of the lower Torehina Formation (Oligocene) crop out along western Coromandel Peninsula and overlie, with strong angular discordance, continental-margin metasedimentary rocks (Manaia Hill Group) of Mesozoic (Late
Baker C. K.   +19 more
core   +2 more sources

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