Results 131 to 140 of about 274,135 (269)

Geochronological and geochemical constraints on juvenile continental crust formation in the Eocene Luzon intra-oceanic arc, Philippines

Geoscience Letters
The formation of juvenile felsic crust in intra-oceanic arcs (IOAs) represents a fundamental but poorly understood process in Earth's crustal evolution.
Karl D. Jabagat, Yuan-Hsi Lee, Wan-Ling Tsai, Hao-Yang Lee, Jillian Aira S. Gabo-Ratio, Carla B. Dimalanta   +5 more
doaj   +1 more source

Segregated oceanic crust trapped at the bottom mantle transition zone revealed from ambient noise interferometry. [PDF]

Nat Commun, 2021
Feng J, Yao H, Wang Y, Poli P, Mao Z.
europepmc   +1 more source

(Table 3) Oxygen isotopic data for silicate minerals from upper oceanic crust rocks, ODP Site 129-801C

, 2003
(Table 3) Oxygen isotopic data for silicate minerals from upper oceanic crust rocks, ODP Site 129 ...
Alt, Jeffrey C, Damon A H Teagle (7885670), Teagle, Damon A H, Jeffrey C Alt (6958445)   +3 more
core   +1 more source

Not all rhodoliths need a bed–depositional mechanisms in shallow water Sporolithon nodosum rhodoliths from the Whangaparaoa peninsula (North Island, New Zealand)

Sedimentology, EarlyView.
ABSTRACT Rhodoliths, formed by crustose coralline algae (CCA), are prominent components in carbonate platform deposits, contributing to the characteristic rhodalgal facies. Their formation is influenced by both biological and physical factors, and under specific conditions, they can accumulate, forming extensive rhodolith beds.
Sebastian Teichert, Thomas Mölg, Ines Pyko, Elena Kropač, Peter Marriott, Roberta D'Archino, Nicolas Cullen, Daniela Basso, Nora Persch, Sven Bach, Ella Lis, Beau Masters, Wendy Nelson   +12 more
wiley   +1 more source

Crustal accretionary processes at mid-ocean ridges - Valu Fa Ridge, Lau Basin [PDF]

, 1998
The structure of oceanic crust is surprisingly uniform, which suggests that crustal accretionary processes at mid-ocean ridges must be broadly similar, despite their different spreading rates and seafloor morphologies.
Turner, Ian mark
core  

(Tables 1&2) B, d11B, K and δ¹⁸O data for altered oceanic crust at DSDP Site 51-417A

, 1995
(Tables 1&2) B, d11B, K and δ¹⁸O data for altered oceanic crust at DSDP Site 51 ...
Spivack, Arthur J, Staudigel, Hubert, Stanley R Hart (6886148), H J Smith (6982802), Hart, Stanley R, Arthur J Spivack (6970373), Hubert Staudigel (6961400), Smith, H J   +7 more
core   +1 more source

Contourite erosional and depositional features of the Maastrichtian chalk on Jasmund peninsula (Rügen island, NE Germany)

Sedimentology, EarlyView.
ABSTRACT Seismic‐scale features such as deeply incised submarine valleys and mounded drifts together with ichnological features indicative of discontinuous sedimentation and erosional episodes have recently been documented from the Upper Cretaceous chalk in the southern Baltic Sea area.
Marcel Schlembach, Heiko Hüneke, Mike Reich, Svante Peters, Nele Ahlhaus, Sylvia Weinert, Arwed Gibb   +6 more
wiley   +1 more source

Early development of anoxia prior to the main euxinic phase of the Jenkyns Event on the margin of the Western Tethys (Sachrang Basin, Eastern Alps)

Sedimentology, EarlyView.
ABSTRACT Although the global expansion of oxygen‐depleted marine environments during the Early Toarcian Jenkyns Event (or Toarcian Oceanic Anoxic Event) is primarily inferred from successions in the NW European epicontinental basins, the timing of the expansion of anoxia in Tethyan basins, where hydrography potentially played a minor role, is poorly ...
Tamás Müller, Stefan Neumeister, Jan Schlögl, Emanuela Mattioli, Hans‐Jürgen Gawlick, Thomas J. Algeo, Adam Tomašových   +6 more
wiley   +1 more source

Siliceous sponges or seawater as a silicon source? Tracing silicon burial pathways of the Upper Cretaceous opal‐CT deposits using δ30Si and δ7Li

Sedimentology, EarlyView.
ABSTRACT Classical models of formation of sedimentary siliceous rocks (flint, chert, opoka) commonly assume that the Cretaceous marine silicon (Si) cycle was primarily biologically controlled, broadly analogous to the modern ocean. In this framework, siliceous sponges are regarded as the principal source of dissolved silica (dSi) to sediment porewaters,
Agata Jurkowska, Ewa Świerczewska‐Gładysz, Marek Szczerba, Tomáš Magna, Szymon Kowalik Filipowicz   +4 more
wiley   +1 more source

Recycling oceanic crust for continental crustal growth: Sr-Nd-Hf isotope evidence from granitoids in the western Junggar region, NW China

, 2012
The juvenile component of accretionary orogenic belts has been declining since the Archean. As a result, there is often controversy regarding the contribution of oceanic basalts to Phanerozoic crustal growth, as in the case of the Central Asian Orogenic ...
Yi-Gang Xu, Wang, Q., Wyman, Derek, A., Zhao, Zhen-Hua, Tang, Gong-Jian, Wyman, D., Xu, Y., Wang, Qiang, Zheng-Xiang Li, Zhao, Z., Li, Zheng-Xiang, Zhen-Hua Zhao, Derek A. Wyman, Xu, Yi-Gang, Tang, G., Gong-Jian Tang, Qiang Wang   +16 more
core   +1 more source