Results 81 to 90 of about 9,763,566 (182)

Correlating High‐Resolution Terrestrial Organic Carbon Isotope Records Across the Cretaceous‐Paleogene Boundary

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract The Cretaceous–Paleogene boundary (∼66 million years ago) represents the most recent mass extinction event when an estimated 75% of all species became extinct, including all non‐avian dinosaurs. Here we focus on the stable carbon isotope (δ13C) analysis of coal and coaly sediments across the terrestrial K/Pg boundary from 10 sites, between 42 ...
Gregory D. Price   +6 more
wiley   +1 more source

Exkursionspunkt 3: Das Hüttenröder Olisthostrom: eine kritische Bilanz des Olisthostrom-Modells im Harz [PDF]

open access: yes, 2012
In den Beiheften des Halleschen Jahrbuchs für Geowissenschaften werden Abschlussarbeiten, Forschungsergebnisse und Sammelschriften veröffentlicht.Die Beihefte erscheinen in unregelmäßiger Reihenfolge parallel zum Halleschen Jahrbuch für ...
Friedel, Carl-Heinz
core   +1 more source

A geophysical investigation of the Roter Kamm impact crater, Namibia

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 7, Page 1386-1398, July 2026.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus   +6 more
wiley   +1 more source

Fluctuations and differential contraction during regeneration of Hydra vulgaris tissue toroids

open access: yesNew Journal of Physics, 2013
We studied regenerating bilayered tissue toroids dissected from Hydra vulgaris polyps and relate our macroscopic observations to the dynamics of force-generating mesoscopic cytoskeletal structures.
Michael Krahe   +6 more
doaj   +1 more source

Non-Invasive Spectral Phenotyping Methods can Improve and Accelerate Cercospora Disease Scoring in Sugar Beet Breeding

open access: yesAgriculture, 2014
Breeding for Cercospora resistant sugar beet cultivars requires field experiments for testing resistance levels of candidate genotypes in conditions that are close to agricultural cultivation.
Marcus Jansen   +4 more
doaj   +1 more source

Continental invertebrate and plant trace fossils in space and time: State of the art and prospects [PDF]

open access: yes, 2019
In den Beiheften des Halleschen Jahrbuchs für Geowissenschaften werden Abschlussarbeiten, Forschungsergebnisse und Sammelschriften veröffentlicht.Die Beihefte erscheinen in unregelmäßiger Reihenfolge parallel zum Halleschen Jahrbuch für ...
Mangano, M. Gabriela, Buatois, Luis A.
core   +1 more source

The Seismic Signature of the Atlantis Massif Oceanic Detachment Fault Determined From Crystallographic Preferred Orientation and Microstructure

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract At slow‐spreading mid‐ocean ridges large scale detachment faults partly accommodate the spreading process. The mafic and ultramafic rocks at the ridges are infiltrated by water and change their mineralogy. Subsequently or contemporaneously to these reactions, detachment faulting takes place.
R. Kuehn   +4 more
wiley   +1 more source

Nutzung digitaler Geländemodelle (DGM) aus Laserscandaten in der kreisfreien Stadt Dessau-Roßlau [PDF]

open access: yes, 2014
In den Beiheften des Halleschen Jahrbuchs für Geowissenschaften werden Abschlussarbeiten, Forschungsergebnisse und Sammelschriften veröffentlicht.Die Beihefte erscheinen in unregelmäßiger Reihenfolge parallel zum Halleschen Jahrbuch für ...
Tannert, Grit
core   +1 more source

Ausbildung und Entstehung von Karbonat-Pelit-Gesteinen des Oberdevons und Unterkarbons im Wildenfelser Zwischengebirge [PDF]

open access: yes, 1985
Das Hallesche Jahrbuch ist in Mitteldeutschland das Journal für die Geowissenschaften. Es ist mit einem Band pro Jahr und diversen Beiheften ideal für die Publikation lokaler und überregionaler Beiträge und zugleich ein ideales Medium, um Promotionen und
Schreiber, Alois
core   +1 more source

Ba[C(CN)3]2 and Pb[C(CN)3]2: Two Remarkably Different Heavy Main‐Group Metal Bistricyanomethanides

open access: yesZeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 8, 25 May 2026.
Metathesis reactions of either barium dichloride, BaCl2, or lead dichloride, PbCl2, respectively, with Ag[C(CN)3] in water yielded single crystals of anhydrous Ba[C(CN)3]2 and Pb[C(CN)3]2. Ba[C(CN)3]2 crystallizes in the monoclinic space group P21/n (no. 14) with the lattice parameters a = 437.98(3) pm, b = 1685.36(11) pm, c = 1398.87(9) pm, β = 96.541(
Olaf Reckeweg   +6 more
wiley   +1 more source

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