Rattling iron concretions from the Waikato Coal Measures
نویسندگان
چکیده
منابع مشابه
Early Diagenetic Calcareous Coal Balls and Roof Shale Concretions from the Pennsylvanian (Allegheny Series)
The calcareous concretions studied formed in different depositional environments associated with the Pcnnsylvanian eyclothems of cast central Ohio. The late syngenetic to early diagenetie coal balls from Lower Frecport Coal in Jefferson County were formed by cellular permineralization of decaying terrestrial plants in a peat swamp. These coal balls, composed of N9.N% calcite, 7.0% pyrite, and 2...
متن کاملIron Isotopes in Spherical Hematite and Goethite Concretions from the Navajo Sandstone (utah, Usa): a Prospective Study for “martian Blueberries”
NAVAJO SANDSTONE (UTAH, USA): A PROSPECTIVE STUDY FOR “MARTIAN BLUEBERRIES”. Vincent Busigny 2, 3 and Nicolas Dauphas 2, , Origins Laboratory, Department of the Geophysical Sciences, and Enrico Fermi Institute, The University of Chicago, 5734 South Ellis Avenue, Chicago IL 60637, USA ([email protected]), Department of Geology, The Field Museum, 1400 South Lake Shore Drive, Chicago IL ...
متن کاملRattling the cage and opening the door.
I share with Poulin-Dubois and with Sabbagh, Koenig and Kuhlmeier the conviction that more research is needed on the mechanisms supporting selective social learning in infants and children. However, my plea is more specific: for research that tests domain-specific hypotheses about mechanism against domain-general hypotheses derived from other fields of cognitive science. Many, but not all, of t...
متن کاملProtein dynamics: from rattling in a cage to structural relaxation.
We present an overview of protein dynamics based mostly on results of neutron scattering, dielectric relaxation spectroscopy and molecular dynamics simulations. We identify several major classes of protein motions on the time scale from faster than picoseconds to several microseconds, and discuss the coupling of these processes to solvent dynamics. Our analysis suggests that the microsecond bac...
متن کاملA new trigonotarbid arachnid from the Coal Measures of Hagen-Vorhalle, Germany
A new trigonotarbid (Arachnida: Trigonotarbida: Trigonotarbidae) is described as Archaeomartus roessleri n. sp. from the Upper Carboniferous (Pennsylvanian; Namurian B, higher Marsdenian) of Hagen-Vorhalle, Germany. Originally assigned to Trigonotarbus johnsoni Pocock, 1911, our new fossil has a distinctly lobed carapace and thus resembles more closely the Early Devonian species Archaeomartus l...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Zealand Journal of Geology and Geophysics
سال: 1974
ISSN: 0028-8306,1175-8791
DOI: 10.1080/00288306.1974.10427991