Results 41 to 50 of about 208,933 (390)

The first Late Triassic Chinese triadophlebiomorphan (Insecta: Odonatoptera): biogeographic implications

Scientific Reports, 2017
The clade Triadophlebiomorpha represents a morphological ‘link’ between the Paleozoic griffenflies (Meganisoptera) and the modern taxa. Nevertheless they are relatively poorly known in the body structures and paleobiogeography.
Daran Zheng, André Nel, He Wang, Bo Wang, Edmund A. Jarzembowski, Su-Chin Chang, Haichun Zhang   +6 more
doaj   +1 more source

The origin of fine scale acoustic stratigraphy in deep-sea carbonates [PDF]

, 1979
In this paper we investigate the origin and geologic significance of the closely spaced high-frequency subbottom acoustic reflectors characteristic of pelagic carbonates.
Mayer, Larry A.
core   +2 more sources

Discrete Dynamical Models Showing Pattern Formation in Subaqueous Bedforms [PDF]

, 1993
A new class of ``toy models'' for subaqueous bedform formation are proposed and examined. These models all show a similar mechanism of wavelength selection via bedform unification, and they may have applications to bedform stratigraphy. The models are also useful for exploring general issues of pattern formation and complexity in stochastically driven ...
arxiv   +1 more source

Effects of Stratigraphy on Response of Energy Piles [PDF]

arXiv, 2022
Energy piles are gaining increased popularity due to a growing demand for clean energy. To further advance the understanding of soil-structure interaction in energy piles, recently-derived analytical solutions have been implemented to investigate the impact of stratigraphy on the soil-structure interaction.
arxiv  

Contrasting carbonate depositional systems for Pliocene cool-water limestones cropping out in central Hawke's Bay, New Zealand [PDF]

, 2004
Pliocene limestone formations in central Hawke's Bay (eastern North Island, New Zealand) accumulated on and near the margins of a narrow forearc basin seaway within the convergent Australia/Pacific plate boundary zone.
Andrews P. B., Ballance P. F., Boreen T. D., Buckeridge J., Caron V., Caron V., Dunham R. J., Embry A. F., Galehouse J. S., Graafhuis R., Haywick D. W., Haywick D. W., Kamp P. J. J., Lewis K. B., Light J. M., Nummedal D., Schlager W., Vail P. R., Van Wagoner J. C., Walker R. G., Wright V. P.   +20 more
core   +2 more sources

Late Maastrichtian carbon isotope stratigraphy and cyclostratigraphy of the Newfoundland Margin (Site U1403, IODP Expedition 342) [PDF]

, 2018
Earth’s climate during the Maastrichtian (latest Cretaceous) was punctuated by brief warming and cooling episodes, accompanied by perturbations of the global carbon cycle.
Agnini, Claudia, Batenburg, S., Blum, P., Bornemann, A., Boulila, S., Bown, P. R., Courn\ue8de, C., Fehr, A., Fiebig, J., Friedrich, O., Ghosh, A. K., Hasegawa, T., Hollis, C. J., Hull, P. M., Jo, K., Junium, C. K., Kaneko, M., Liebrand, D., Lippert, P. C., Liu, Z., Matsui, H., Moebius, I., Moriya, K., Nishi, H., Norris, R. D., Opdyke, B. N., Penman, D., R\uf6hl, U., Romans, B., Scher, H. D., Sexton, P., Takagi, H., Turner, S. K., Voigt, S., Westerhold, T., Whiteside, J. H., Wilson, P. A., Yamaguchi, T., Yamamoto, Y.   +38 more
core   +2 more sources

Louth Crater: Evolution of a layered water ice mound [PDF]

Icarus (2008) 196, 433-445, 2014
We report on observations made of the ~36km diameter crater, Louth, in the north polar region of Mars (at 70{\deg}N, 103.2{\deg}E). High-resolution imagery from the instruments on the Mars Reconnaissance Orbiter (MRO) spacecraft has been used to map a 15km diameter water ice deposit in the center of the crater.
arxiv   +1 more source

The Monterey event in the Mediterranean: A record from shelf sediments of Malta [PDF]

, 1996
Oligo-Miocene carbonate platform and shelf sediments outcropping on the Maltese Islands provide an excellent archive of the paleoceanography of the central Mediterranean.
Jacobs, E, Shields, G, Stille, P, Weissert, H   +3 more
core   +1 more source

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

The Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae, Julien Benoit, Irina Ruf, Zoleka Sibiya, Bhart‐Anjan S. Bhullar   +4 more
wiley   +1 more source

A tiny Cambrian stem-mandibulate reveals independent evolution of limb tagmatization and specialization in early euarthropods

Scientific Reports
The mandibulate euarthropods are the most speciose animal group, but the evolutionary gaps in origin of mandibulate body plan remain unresolved. Marrellomorphs, a common Paleozoic euarthropod group, had a long evolutionary history from Cambrian to ...
Yao Liu, Han Zeng, Fangchen Zhao, Yuyan Zhu, Yimeng Li, Zongjun Yin, Maoyan Zhu   +6 more
doaj   +1 more source