EPSL Earth and Planetary Science Letters 193 (2001) 649-651 www.elsevier.com/locate/epsl Contents Volume 193 Letters Contradictory magnetic polarities in sediments and variable timing of neoformation of authigenic greigite ern, cee, Gee Bee, AT: TS CG i PE i ioe 86 a bi sb OAKS ie a 08 eo The ee ae b bee Active displacement field in the Suez—Sinai area: the role of postseismic deformation i, POR. Tepe AE Th, SD 6% 6 ok wee 6:6' d bead Wee Fae ew ee eb ie oe ee 13 When was Arabia close to the pole? i See, F. PR OE F. FRE x.0 0. 0.6 ea WK ds 2s Ae See Tie eee bt ee ee ee ie ees ek ees: ” Ar—°Ar age of the St. Mary’s Islands volcanics, southern India: record of India~Madagascar break-up on the Indian subcontinent is Se, Dee. SORE GUE Th TN on i stinr n 6 oS ee ook EE CM a 4 en Be eae ae Coupling of viscous and diffusive controls on bubble growth during explosive volcanic eruptions en. HP WURE, FE RE. DEE DE Bs PO is a6: 004 04a Vind Law o> bees OAS Oe i ele The effects of dissolved CO, on the density and viscosity of silicate melts: a preliminary study OT | ge IT err ee ee rer Fy Pe ere ee ey Density of basaltic melt at high pressure and stability of the melt at the base of the lower mantle i ED ANE EE ER ko 0s 5 WA d Ob 46R ede ORA TS EE Oe wae bd kek be eet beds tha A statistical test of the two reservoir model for helium isotopes ie FUMIE 5aS ho b 0:44:08 OSCE OM ED AME DEAS CR Ob ora ew EEA EEE EA SOO Fhe eee Noble gas study of the Reunion hotspot: evidence for distinct less-degassed mantle sources T. Hanyu, T.J. Dunai, G.R. Davies, I. Kaneoka, S. Nohda and K. Uto .... 1... ee eee Oceanic and orogenic fluid—rock interaction in '*O/'°O-enriched metagabbros of an ophiolite (Tinos, Cyclades) i. 66 BLUME En Se ERR SS ee ee a eT et Ree On er PC ee eee Mee Evidence of hydration of the mantle wedge and its role in the exhumation of eclogites S. Guillot, K.H. Hattori, J. de Sigoyer, T. Nagler and A.-L. Auzende .... 1... .. cece ccc cece tees eeeens The petrophysical properties of deformation bands in relation to their microstructure ee a a, os Ang eek ew AO eS A 0/o ae he why Sm Graces pies tea lee Rech ak eerie eae Biogeochemical data from well preserved 200 ka collagen and skeletal remains A.M. Jones, T.C. O'Connell, E.D. Young, K. Scott, C.M. Buckingham, P. Iacumin and M.D. Brasier ............ 143 The impact of the 1991 Mount Pinatubo tephra fallout on the geochemical environment of the deep-sea sediments in the South China Sea M. Haeckel, J. van Beusekom, M.G. Wiesner and I. Konig... 1... ccc ccc cece cee cree eee eeeenene 151 Uranium-series and radiocarbon geochronology of deep-sea corals: implications for Southern Ocean ventilation rates and the oceanic carbon cycle S.J. Goldstein, D.W. Lea, S. Chakraborty, M. Kashgarian and M.T. Murrell... 2.0.2... 20.0000c e0ee. e.ee. e ee 167 The East Siberian basin in the Silurian: evidence for no large-scale sea-level changes i tay an a SE gi as ere ina ale aie hep 6 We Mw Ak Oak kee Wu ee Se eee ees 183 Influence of secular variation of the geomagnetic field on production rates of in situ produced cosmogenic nuclides a 49 Ch Vida Ke CAR ONO Oe CREAM dais be BONNETS ERAS Ode ae abe eee th reek 197 On scaling cosmogenic nuclide production rates for altitude and latitude using cosmic-ray measurements i Ce CN ag cia a pate ag Ge eS Ae A 4 tO eR «he de Eas Cee Ve ehh edb ede ws 213 A low viscosity wedge in subduction zones OI nk a Le Ow ab te:t e 4 phe Sabo tS Th ME a es ee a at Oe 227 Deep Earth rare gases: initial inventories, capture from the solar nebula, and losses during Moon formation a ee, I, i son a oo kal Mao bualed ee eed inthe Wd Seed Vu bee 8-4 dplene.e's be alone 237 PII: S0012-821X(01)00473-3 650 Contents /E arth and Planetary Science Letters 193 (2001) 649-651 Discussion Comment on: ‘Magnetostratigraphy and biostratigraphy of the Middle Triassic Margon section (Southern Alps, Italy)’ by P.R. Gialanella, F. Heller, P. Mietto, A. Incoronato, V. De Zanche, P. Gianolla, G. Roghi eh he i he Pa Ral a a id ole OES. Cee ek eee eee we eevad és Letters The Great Alaskan Terrane Wreck: reconciliation of paleomagnetic and geological data in the northern Cordillera SEES EX Ee re a ee ca eee AY Pe Be Come © fe peu OO ee ee ee 259 Paleomagnetic study of Upper Jurassic rocks from the Sichuan basin: tectonic aspects for the collision between the Yangtze Block and the North China Block ye MS eneee eee re S r rn St ae eee Magnetic stability of oceanic gabbros from ODP Hole 735B ES ER a RR ee Pe a ee ae ee re oe Serre er eae a 2 ere ee Records of the Cobb Mountain Subchron from the Bermuda Rise (ODP LEG 172) Z. Yang, B.M. Clement, G.D. Acton, S.P. Lund, M. Okada and T. Williams .......20.0..000.0 .2c. ee0e e.e e A map of the Pacific geomagnetic anomaly during the Brunhes chron i a oe a ok bes Kah ae tee SC ON es Ober Bab rehab eae as Age and duration of activity at the Isle of Mull Tertiary igneous centre, Scotland, and confirmation of the existence of subchrons during Anomaly 26r CE Ser oe ie eee ake A a hie oo ark obo NS bw Wt area ae + pare 8 b 4.6 8 ee Newly identified segments of the Pacific—Australia plate boundary along the North Fiji transform zone B. Pelletier, Y. Lagabrielle, M. Benoit, G. Cabioch, S. Calmant, E. Garel and C. Guivel ..................40.4. Intra-oceanic subduction-related hydrothermal venting, Kermadec volcanic arc, New Zealand C.E.J. de Ronde, E.T. Baker, G.J. Massoth, J.E. Lupton, I.C. Wright, R.A. Feely and R.R. Greene ............. Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge T. Gamo, H. Chiba, T. Yamanaka, T. Okudaira, J. Hashimoto, S. Tsuchida, J.-i. Ishibashi, S. Kataoka, U. Tsunogai, K. eR ee al ale ee wih s > 6b wey eet ake ew eee Cw Re ONS Hot vents in an ice-cold ocean: Indications for phase separation at the southernmost area of hydrothermal activity, Bransfield Strait, Antarctica A. Dahlmann, K. Wallmann, H. Sahling, G. Sarthou, G. Bohrmann, S. Petersen, C.S. Chin and G.P. Klinkhammer . . Discovery of new hydrothermal vent sites in Bransfield Strait, Antarctica G.P. Klinkhammer, C.S. Chin, R.A. Keller, A. Dahlmann, H. Sahling, G. Sarthou, S. Petersen, F. Smith and C. Wilson 395 The Grimsey hydrothermal field offshore North Iceland: crustal structure, faulting and related gas venting Neen en ee eee eee ee gk b ce ewe bee beni bweenwainecbeehesdsenene Seismic evidence for a deeply rooted low-velocity anomaly in the upper mantle beneath the northeastern Afro/Arabian continent SCE ECOL REECE CETTE CTULESUT EC LRTELE ECU UT CEE 423 Earthquake cycle dominates contemporary crustal deformation in Central and Southern Andes J. Klotz, G. Khazaradze, D. Angermann, C. Reigber, R. Perdomo and O. Cifuentes.................000.0005 437 Natural mass-dependent variations in the isotopic composition of molybdenum i Pak eda sea U UG M WA WMt edb ee Ode Deka eM Cee keene ewes 447 Isotopic search for live '*°Cs in the early solar system and possibility of '*°Cs—'*>Ba chronometer rr a et bebe sees bees ccabeseeserineadenecsebedeue 459 Magmatic degassing of multicomponent vapors and assessment of magma depth: application to Vulcano Island (Italy) EE ear ge RE Se PAY aoe ark a eee to eae OE ar eer ya a 467 Partial melting of mafic (amphibolitic) lower crust by periodic influx of basaltic magma iS Shee 6 a are Ly aed eae ares oes Dae Oa Cko sees ASTER 483 Equation of state of lower mantle (Al,Fe)-MgSiO; perovskite rr rs a i keene ee ake eee ehh bee ea ee ee kee eee ee B eee 501 Sulfur in the Earth’s inner core es ee asd woe eked Bee 568 wee tee he ease eevee beee been’ 509 Reconstruction of the paleoaccumulation rate of central Greenland during the last 75 kyr using the cosmogenic radio- nuclides *°Cl and '°Be and geomagnetic field intensity data G. Wagner, C. Laj, J. Beer, C. Kissel, R. Muscheler, J. Masarik and H.-A. Synal...........000.020.000 .0ue s 515 Estimate of inner core rotation rate from United Kingdom regional seismic network data and consequences for inner core dynamical behaviour IRI EE ET Oe Oe EE TOE EES LETTE OO EEO TH PEL TE 523 Contents/ Earth and Planetary Science Letters 193 (2001) 649-651 651 ” Ar/A r dating of Late Permian evaporites, southeastern New Mexico, USA P.R. Renne, W.D. Sharp, I.P. Montafiez, T.A. Becker and R.A. Zierenberg .................00000ee0e : 539 Erosion timescales derived from U-decay series measurements in rivers a a, Me ed ah MARROW ee ee ben Oebaade bene 549 Use of uranium-thorium dating to determine past '*C reservoir effects in lakes: examples from Antarctica NE Pe ERA ga SOLE eS Oe AE sieI T se, EOE Pn Ae Ren MNS 565 Coupled climate and sea-level changes deduced from Huon Peninsula coral terraces of the last ice age a a gs bg a:8 be We Wn ee 0S 00.0 oO Ohba e Reed eens bees 579 Astronomical forcing in Late Eocene marine sediments a le ce i. ble bla-@ Mb ab oe Vales hen Chale eee Gere tee 589 Extension of Cathaysian flora during the Permian rsa rr ry ta ne ree ee ee to 603 Testing optically stimulated luminescence dating of sand-sized quartz and feldspar from fluvial deposits 5. wae, AS. Beewey, G.A.T. Cee Oe Ti. TOGO. 6.x cir cteses setae iweeeeversadvecewode s 617 Detection of low concentrations of fine-grained iron oxides by voltammetry of microparticles ee, WU SEE, F. GO BE BN ok koe Xe ko ee NA tET Ewe Adee ee us Ope eka habe 631 ee ee De ee = y b-x 6 acaed btw © Ka 0k he 0 ke eae ee te he eae eee 643