Results 111 to 120 of about 5,193 (249)
Sedimentological studies in the late Precambrian and lower Cambrian rocks of east Finnmark
, 1971 In eastern Finnmark a northward thickening wedge of late Precambrian and Cambro-Ordovician sedimentary rocks extends 200km from east to west, with a maximum north- south width of approximately 50km. The succession lies unconformably upon Precambrian crystalline basement, which crops out to the south.
openaire +2 more sources
, 2016 Pre-Silurian fine-grained meandering river deposits are apparently rare in the rock record. Most modern-day river dynamics are influenced by vegetation through bank stabilization, fine-grained sediment production and retention, and runoff control ...
Owen, Geraint +2 more
core +1 more source
Occurrence of a Cavity‐Nesting Tropical Swallow Is Associated to Riverbed Lithology
Austral Ecology, Volume 51, Issue 6, June 2026.ABSTRACT Understanding the factors shaping species distribution is a key challenge in ecology and biogeography. While dispersal limitations, environmental features, and biotic interactions are commonly recognized as key determinants of species abundance and distribution, some species exhibit patchy distributions that remain hard to explain.
Leonardo Esteves Lopes +9 more
wiley +1 more source
Reviewing the Ediacaran fossils of the Long Mynd, Shropshire
The Precambrian fossils of the Long Mynd, Shropshire, are becoming increasingly important to studies of palaeoecology and evolution immediately prior to the 'Cambrian Explosion' of animal life.
Liu, Alexander G.
core
Microbial mats in dinosaur ichnocoenoses
Sedimentology, Volume 73, Issue 4, Page 1099-1120, June 2026.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 +3 more
wiley +1 more source
RI-21 Lower and Middle Precambrian Stratigraphic Nomenclature for East-Central Minnesota
, 1978 This report summarizes stratigraphic nomenclature used by the Minnesota Geological Survey for the Lower and Middle Precambrian rocks that occur in east-central Minnesota. In addition, it provides brief descriptions of dike rocks of possible Middle and
Morey, G.B.
core
Precambrian alkaline magmatism
, 1996 There are very few alkaline rocks in Precambrian terrains. The oldest well-documented examples are 2.7 Ga trachytes and leucite phonolites from the Kirkland Lake region of Canada.
Blichert-Toft, J. +2 more
core +1 more source
Sedimentology, Volume 73, Issue 4, Page 1001-1029, June 2026.ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris +9 more
wiley +1 more source
Estonian georesources in the European context [PDF]
Estonian Journal of Earth Sciences, 2008 Estonia is situated on the southern buried slope of the Baltic Shield where the sedimentary bedrock overlies the Precambrian crystalline basement. The Cambrian section contains mainly sandstone and clay (e.g.
Raudsep, Rein
doaj
, 2013 Геолого-формационные исследования пока еще очень мало используют при разработке стратиграфии нижнего докембрия. Рассмотрены преимущества геолого-формационного расчленения перед традиционным стратиграфическим расчленением нижнего докембрия.
Кирилюк, В.П.
core +1 more source