Results 91 to 100 of about 34,613 (225)

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Resilience of Atlantic Slippersnail Crepidula fornicata Larvae in the Face of Severe Coastal Acidification

Frontiers in Marine Science, 2018
Globally, average oceanic pH is dropping, and it will continue to decline into the foreseeable future. This ocean acidification (OA) will exacerbate the natural fluctuations in pH that nearshore ecosystems currently experience daily, potentially pushing ...
Nicola G. Kriefall, Jan A. Pechenik, Anthony Pires, Sarah W. Davies   +3 more
doaj   +1 more source

Mechanical properties of the elemental nanocomponents of nacre structure [PDF]

, 2010
Sheet nacre is a nanocomposite with a multiscale structure displaying a lamellar “bricks and mortar” microarchitecture. In this latter, the brick refer to aragonite platelets and the mortar to a soft organic biopolymer.
Bourrat, Xavier, Lopez, Evelyne, Pantalé, Olivier, Rousseau, Marthe, Stempflé, Philippe   +4 more
core   +4 more sources

The Greenland–Scotland Ridge in a Changing Ocean: Time to Act?

Marine Ecology, EarlyView.
ABSTRACT The Greenland–Scotland Ridge is a submarine mountain that rises up to 500 m below the sea surface and extends from the east coast of Greenland to the continental shelf of Iceland and across the Faroe Islands to Scotland. The ridge not only separates deeper ocean basins on either side, that is, the North Atlantic and Arctic oceans, but also ...
Christophe Pampoulie, Saskia Brix, Haseeb S. Randhawa   +2 more
wiley   +1 more source

Primary aragonite and high-Mg calcite in the late Cambrian (Furongian) : Potential evidence from marine carbonates in Oman [PDF]

, 2016
Acknowledgements Fieldwork and sampling was funded by Petroleum Development Oman during S. Al Marjibis's Ph.D. Their help is gratefully acknowledged. We also thank colleagues at the University of Aberdeen, Julie Dougans (SUERC) for assisting with stable ...
Brasier, Alexander T., Neilson, Joyce E., North, Colin P.   +2 more
core   +1 more source

Small‐scale elemental abundance variations in Ryugu particles from touchdown 1

Meteoritics &Planetary Science, EarlyView.
Abstract Ryugu materials closely resemble CI chondrites' mineralogical, chemical, and isotopic compositions; yet minor but resolvable differences in certain elemental abundances are evident. In this study, the bulk chemical compositions of eight individual Ryugu particles (1.5–4.3 mg) from the first touchdown site (TD1) were determined using triple ...
Karina López García, Tetsuya Yokoyama, Ikshu Gautam, Makiko K. Haba, Tsuyoshi Iizuka, Nao Nakanishi, Ryota Fukai   +6 more
wiley   +1 more source

Pliocene Te Aute limestones, New Zealand: Expanding concepts for cool-water shelf carbonates [PDF]

, 2003
Acceptance of a spectrum of warm- through cold-water shallow-marine carbonate facies has become of fundamental importance for correctly interpreting the origin and significance of all ancient platform limestones.
Al‐Aasam I. S., Beu A. G., Boreen T. D., Brand U., Brand U., Caron V., Chave K. E., Cole E. R., de Caen R. F. B., de Caen R. F. B., Francis D. A., Haywick D. W. N., Haywick D. W. N., Hood S. D., James N. P., Kamp P. J. J., Lewis K. B., Lohmann K. C., Marshall J. F., McIntyre A., Nelson C. S., Nelson C. S., Scoffin T. P., Scudeler Baccelle L. S., Smith A. M., Summerhayes C. P., Veizer J., Winefield P. R.   +27 more
core   +2 more sources

The role of substrate materials for the survival and growth of coral micro‐fragment sheets

Restoration Ecology, EarlyView.
Biofouling can have a negative impact on the survival and growth of corals in aquaculture. For coral aquaculture to support reef restoration, there needs to be a cost‐effective and efficient method that reduces the reliance on labor for coral maintenance.
Muhammad Azmi Abdul Wahab, Sophie Ferguson, Breiana Whitehead, Jenny Fong, Pirjo Haikola, Andrea Severati, Elsa Antunes   +6 more
wiley   +1 more source

Microbial mats in dinosaur ichnocoenoses

Sedimentology, EarlyView.
ABSTRACT Until now, the significance of microbial mats in preservation of dinosaur tracks and in reconstructing the palaeoenvironment in which dinosaurs roamed was rarely studied. Dinosaur tracks are commonly found close to ancient aquatic bodies where moist sediment had once allowed footstep registration.
Nora Noffke, Paul C. Murphey, Roger C. Buntin, Martin G. Lockley   +3 more
wiley   +1 more source

Spherulite in the modern aragonitic travertine stromatolite has a calcite core with exopolymers

Sedimentology, EarlyView.
ABSTRACT Spherulites are spherical to ellipsoidal particles formed by various crystalline substances and can be abiotically synthesised in the laboratory. Among various spherulite types, spherulites composed of calcium carbonate are also found in various natural environments, but their abiotic or biotic origins are still controversial.
Fumito Shiraishi, Takayuki Akimoto, Naotaka Tomioka, Satoko Motai, Yoshio Takahashi   +4 more
wiley   +1 more source