Results 201 to 210 of about 1,680,203 (251)

Conditions and timing for the precipitation of early marine diagenetic dolomite in the Triassic Dolomia Principale (northern Italy)

Sedimentology, EarlyView.
ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot, Giovanna Della Porta, Mathias Mueller, Fabrizio Berra, Benjamin F. Walter, Aratz Beranoaguirre, Sylvia Riechelmann, Oskar Schramm, Adrian Immenhauser   +8 more
wiley   +1 more source

A near-continuous archaeological record of Pleistocene human occupation at Leang Bulu Bettue, Sulawesi, Indonesia. [PDF]

PLoS One
Burhan B, Hakim B, Sumantri I, Suryatman, Saiful AM, Oktaviana AA, Sardi R, Hasliana, Ramli M, Siagian L, Jusdi A, Abdullah, Syahdar FA, Hamrullah, Ilyas I, Muhammad PH, Budi SS, Djindar NI, Adhityatama S, Lebe R, Ririmasse MNR, Mahmud I, Duli A, Perston YL, Moore MW, Sontag-González M, Li B, van den Bergh GD, Aubert M, Grün R, McGahan DP, Langley MC, James EC, Manne T, Moffat I, Jones B, Brumm A.   +36 more
europepmc   +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

Phased ecological assembly of Triassic marine reptile faunas following the Permian-Triassic mass extinction: ecospace dynamics in South China. [PDF]

Proc Biol Sci
Yao M, Wang Y, Ma Z, Huang J, Sun Z.
europepmc   +1 more source

Quantification of dryland depositional environments across contrasting fluvio‐aeolian and fluvio‐lacustrine transects: An integrated subsurface and outcrop analogue study of the Organ Rock Formation, Utah, USA

Sedimentology, EarlyView.
ABSTRACT The standard subdivision of a distributive fluvial system (DFS) into proximal, medial and distal zones is typically based on the proportion of channel bodies and/or the degree of channel amalgamation, reflecting a downstream fining trend towards a mud‐prone terminal pinch‐out.
Oliver Button, Charlotte L. Priddy, Ross P. Pettigrew, Rachel Brackenridge, Ben A. Kilhams, John A. Howell   +5 more
wiley   +1 more source

The oldest in situ <i>Homo erectus</i> crania in eastern Asia: The Yunxian site dates to ~1.77 Ma. [PDF]

Sci Adv
Tu H, Feng X, Luo L, Lai Z, Granger D, Bae C, Shen G.   +6 more
europepmc   +1 more source

Downcurrent variation in submarine channel‐fill architecture from the shelf to upper slope

Sedimentology, EarlyView.
ABSTRACT The transition between the shelf and the upper slope is often considered an area of sediment bypass, where steeper gradients increase flow velocities and maintain particles in suspension. In addition to transferring sediments into deeper basins, upper‐slope areas can also host channelised submarine deposits.
Moreno Pizzutto, Fabrizio Felletti, Adam McArthur, Mattia Marini, George Pantopoulos, Daniele Invernizzi, Chiara Zuffetti   +6 more
wiley   +1 more source

Lightweight dynamic model for fusion of three-dimensional surface-stratum underground structures. [PDF]

PLoS One
Zhou C, Zhong Y, Tao Z, Lan C, Hu W, Liu Z.   +5 more
europepmc   +1 more source

Perennially ice‐covered lake facies as proxies for ice cover properties and climate: Insights from Lake Joyce, Antarctica

Sedimentology, EarlyView.
ABSTRACT Process‐based depositional models for perennially ice‐covered lakes (PICLs) are important for interpreting palaeolake deposits and their connection to past climate. PICLs are only stable under specific climate states, and unlike other ice‐free or seasonally ice‐covered lakes, PICL deposits generally have bimodal grain sizes: mud introduced by ...
Frances Rivera‐Hernández, Dawn Y. Sumner, Tyler J. Mackey   +2 more
wiley   +1 more source