Search Results - "Furnes, H"

3.5 billion years of glass bioalteration: Volcanic rocks as a basis for microbial life? by Staudigel, Hubert, Furnes, Harald, McLoughlin, Nicola, Banerjee, Neil R., Connell, Laurie B., Templeton, Alexis

“…Alteration textures in volcanic glass from the seafloor fall into two classes, one suggestive of abiotic/diffusive hydration and chemical exchange, and another…”
Get full text

Ichnotaxonomy of microbial trace fossils in volcanic glass by McLoughlin, Nicola, Furnes, H, Banerjee, N. R, Muehlenbachs, K, Staudigel, H

“…Ancient microbial activity in volcanic glass creates micron-sized cavities that can be regarded as trace fossils. These are common in glassy rims of oceanic…”
Get full text

Mechanisms of microtunneling in rock substrates: distinguishing endolithic biosignatures from abiotic microtunnels by MCLOUGHLIN, N., STAUDIGEL, H., FURNES, H., EICKMANN, B., IVARSSON, M.

“…Rock‐dwelling, endolithic micro‐organisms can create tubular microcavities (TMCs) by the dissolution of rock substrates. Microtunnels can also conceivably be…”
Get full text

Septate‐tubular textures in 2.0‐Ga pillow lavas from the Pechenga Greenstone Belt: a nano‐spectroscopic approach to investigate their biogenicity by FLIEGEL, D, WIRTH, R, SIMONETTI, A, FURNES, H, STAUDIGEL, H, HANSKI, E, MUEHLENBACHS, K

“…Pillow lava rims and interpillow hyaloclastites from the upper part of the Pechenga Greenstone Belt, Kola Peninsula, N‐Russia contain rare tubular textures…”
Get full text

Microbes play an important role in the alteration of oceanic crust by Thorseth, I.H., Torsvik, T., Furnes, H., Muehlenbachs, K.

“…Microbes have been identified within altered parts of the glass rims of pillow lavas in the upper oceanic crust, 237 m below the top of the volcanic basement…”
Get full text

Biogenic alteration of volcanic glass from the Troodos Ophiolite, Cyprus by Furnes, H, Muehlenbachs, K, Tumyr, O, Torsvik, T, Xenophontos, C

“…Alteration of basaltic glass through the entire volcanic sequence of the Troodos ophiolite is partly bio-mediated. The following observations support this…”
Get full text

Textural and chemical effects of bacterial activity on basaltic glass: an experimental approach by Thorseth, I.H., Furnes, H., Tumyr, O.

“…Naturally altered basaltic glass may show features such as pitted textures and variable degree of element mobilization relative to the fresh parent. The…”
Get full text

Geochemical constraints on the tectonomagmatic evolution of the late Precambrian Fawakhir ophiolite, Central Eastern Desert, Egypt by El-Sayed, M.M., Furnes, H., Mohamed, F.H.

“…The Fawakhir ophiolitic sequence is composed mainly of serpentinites, metagabbros, boninitic metagabbros and metavolcanics. The serpentinites have geochemical…”
Get full text

Precambrian greenstone sequences represent different ophiolite types by Furnes, H., Dilek, Y., de Wit, M.

“…We present here a global geochemical dataset from one hundred-and-five greenstone sequences, ranging in age from the Eoarchean through the Archean and…”
Get full text

Drilling for the Archean Roots of Life and Tectonic Earth in the Barberton Mountains by Grosch, E. G., McLoughlin, N., de Wit, M., Furnes, H.

“…No abstract available. doi: 10.2204/iodp.sd.8.03.2009…”
Get full text

Cyclic volcanic stratigraphy in a Late Ordovician marginal basin, west Norwegian Caledonides by FURNES, H, HELLEVANG, B, DILEK, Y

“…The well-preserved extrusive sequence of the Solund-Stavfjord Ophiolite Complex (SSOC) in the West Norwegian Caledonides enables reconstruction of the…”
Get full text

Geochemical stratigraphy of the lavas of the Solund-Stavfjord Ophiolite Complex, W. Norway, and magma-chamber dynamics by Furnes, H., Hellevang, B., Robins, B., Gudmundsson, A.

“…The stratigraphy and geochemistry of the uppermost 200-300 m of the metabasalt sequence of the Solund-Stavfjord Ophiolite Complex of western Norway has been…”
Get full text

Geochemistry and Petrogenesis of the Neoproterozoic Granitoids in the Central Eastern Desert, Egypt by El-Sayed, M.M., Mohamed, F.H., Furnes, H., Kanisawa, S.

“…Neoproterozoic rocks in the Umm Gheig Province (UGP), central Eastern Desert, comprise five plutonic rock suites, i.e. a gabbro-diorite suite (GDS), an older…”
Get full text

Geochemical evidence for progressive, rift-related early Palaeozoic volcanism in the western Sudetes by Furnes, H, Kryza, R, Muszynski, A, Pin, C, Garmann, L. B

“…The volcanogenic rocks of the Kaczawa Mts, in the E Variscides, show changing geological and geochemical evolution during the early Palaeozoic. The lower part…”
Get full text

A review of new interpretations of the tectonostratigraphy, geochemistry and evolution of the Onverwacht Suite, Barberton Greenstone Belt, South Africa by Furnes, H., de Wit, M., Robins, B.

“…The Paleoarchean (ca. 3.5–3.3Ga) Onverwacht Suite (OS) of the Barberton Greenstone Belt consists of a 15‐km thick imbricate tectonic stack of seven complexes…”
Get full text

Pan-African magmatism in the Wadi El-Imra District, central Eastern Desert, Egypt; geochemistry and tectonic environment by Furnes, H, El-Sayed, M. M, Khalil, S. O, Hassanen, M. A

“…The late Proterozoic rocks of this district comprise a metagabbro-diorite complex (oldest) and Older and Younger Granitic complexes. Trace element…”
Get full text

Variations in basaltic geochemistry along a propagating rift of the late Ordovician marginal basin of the West Norwegian Caledonides by Furnes, Dilek, Skjerlie, Ryttvad, Fonneland

“…The late Ordovician Solund‐Stavfjord ophiolite complex in the western Norwegian Caledonides records a multi stage seafloor spreading history of an Iapetus…”
Get full text

In-situ dating of the Earth's oldest trace fossil at 3.34 Ga by Fliegel, D., Kosler, J., McLoughlin, N., Simonetti, A., de Wit, M.J., Wirth, R., Furnes, H.

“…Microbial activity in volcanic glass within the oceanic crust can produce micron sized pits and tunnels. Such biogenic textures have been described from the…”
Get full text

Early Life Recorded in Archean Pillow Lavas by Furnes, Harald, Banerjee, Neil R., Muehlenbachs, Karlis, Staudigel, Hubert, de Wit, Maarten

“…Pillow lava rims from the Mesoarchean Barberton Greenstone Belt in South Africa contain micrometer-scale mineralized tubes that provide evidence of submarine…”
Get full text

The Sunnfjord Melange, evidence of Silurian ophiolite accretion in the West Norwegian Caledonides by Andersen, T. B, Skjerlie, K. P, Furnes, H

“…A major composite terrain, the Sunnfjord melange, has been identified in W Norway. The rocks of this melange provide a link between the allochthonous…”
Get full text