Results 121 to 130 of about 1,392,562 (335)
Ecological Research, EarlyView.This study compiled the results of three investigations of stream water quality conducted over a span of 30 years in approximately 40 small forested watersheds in the northern Kanto region. The cation concentrations remained relatively constant, while an overall decrease in the anion concentration was observed.
Rieko Urakawa, Hiroto Toda, Yue Cao
wiley +1 more source
Journal of King Saud University: Science, 2021 In the Sibu-Tatau region of Sarawak, the Belaga Formation (Late Cretaceous- Late Eocene turbidites) is interpreted in relation to a submarine fan model deposited in the extinct ocean basin of the proto-South China Sea.
Nisar Ahmed +6 more
doaj
Yankuang ceshi, 2015 Xinhua phosphorus is a sedimentary phosphate deposit in China with strong REEs enrichment. In this study, Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES) as well as rock-mineral ...
DUAN Kai-bo +7 more
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The Toarcian black shale event in northern Italy
Organic Geochemistry, 1988 Abstract During the Early Toarcian (Jurassic; c . 192 Ma), organic-rich sediments were deposited in many areas of Europe. This paper reports the major findings of the first part of an organic geochemical investigation of the Toarcian Oceanic Anoxic Event (OAE).
Farrimond, P +3 more
openaire +3 more sources
Disentangling Timing Uncertainty of Event‐Driven Connectedness Among Oil‐Based Energy Commodities
Australian Economic Review, EarlyView.Abstract Reported news events frequently influence the pricing dynamics of oil‐based commodities. We analyse almost 900 oil‐related events from 1987 to 2022, categorising them based on recurring characteristics. We quantify dynamic connectedness among energy commodities and apply a novel bootstrap‐after‐bootstrap testing procedure to identify 21 ...
Evžen Kočenda, Daniel Bartušek
wiley +1 more source
Black shales – an unconventional source of noble metals and rhenium
Записки Горного институтаThe content of noble metals and rhenium in the Lower Paleozoic black shales of the eastern Baltic paleobasin in Russia was estimated. Shales are enriched in platinoids (PGM to 0.12 g/t) and rhenium (to 1.54 g/t).
Elena G. Panova +4 more
doaj
Rivista Italiana di Paleontologia e Stratigrafia, 2017 The Aptian-Albian Scisti a Fucoidi Formation from Central Italy represents a spectacular example of pelagic cyclic sedimentation. It consists of a varicolored sequence of marlstone, marly claystone, and marly limestone, with subordinate limestone ...
ELISABETTA ERBA
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Source of bituminous matter in the Devonian and Subcarboniferous black shales of Ohio [PDF]
, 1882 Edward Orton
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Effect of tillage method on early root growth of Miscanthus
Annals of Applied Biology, EarlyView.In‐situ, sub‐soil cameras were used to capture root growth and turnover during the establishment period for field‐grown Miscanthus planted with minimum tillage and no‐tillage methods. No tillage promoted higher root length density and thinner roots in the subsoil, providing potential for improved resource acquisition and soil carbon sequestration.
Amanda J. Holder +2 more
wiley +1 more source
A reappraisal of the Italian record of the Cretaceous pachycormid fish Protosphyraena Leidy, 1857 [PDF]
, 2017 The genus Protosphyraena is known mainly from partial remains, consisting of isolated blade-like teeth, conical rostra and scythe-like pectoral fins. This paper provides a new insight into partial specimens of the genus Protosphyraena from the Cretaceous
Amalfitano, Jacopo +3 more
core +3 more sources