482 resultados para Pratt


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According to a note in a later hand on fly leaf 1, poem composed in 1376 AD.

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Translated by Muammad Bqir Khursn Biranjird (?) in 1223 [1808] in Hyderabad Deccan for Henry Russell.

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Written in two columns, 14 lines per page, in a divani script in black ink, framed within double golden and blue lines. With catchwords on the verso of each leaf.

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The western Lau Basin, between the Central and Eastern Lau Spreading Centers and the Lau Ridge, contains several small, elongate, fault-bounded, partially sediment-filled sub-basins. Sites 834 and 835 were drilled in the oldest part of the Lau Basin in two of these small extensional basins close to the Lau Ridge, formed on late Miocene to early Pliocene oceanic crust. Both sites show a similar sediment sequence that consists of clayey nannofossil oozes and mixed sediments interbedded with epiclastic vitric sands and silts. The vitric sands and silts are largely restricted to the deeper part of the sediment column (early Pliocene-late Pliocene), and the upper part of the sediment column at both sites consists of a distinctive sequence of brown clayey nannofossil ooze, stained by iron and manganese oxyhydroxides (late Pliocene-Holocene). However, the clayey nannofossil ooze sequence at Site 835 is anomalously thick and contains several medium- to very thick beds of matrix-supported, mud-clast conglomerate (interpreted as muddy debris-flow deposits), together with large amounts of redeposited clayey nannofossil ooze and coherent rafted blocks of older hemipelagic material. Redeposited clayey nannofossil oozes can be distinguished from hemipelagic nannofossil oozes using several sedimentological criteria. These include variation in color hue and chroma, presence or absence of bioturbation, presence or absence of scattered foraminifers, grain-size characteristics, variability in calcium carbonate content, presence or absence of pumice clasts, and micropaleontology. Clayey nannofossil ooze turbidites and hemipelagites are also geochemically distinct, with the turbidites being commonly enriched in Mn, Ni, Pb, Zn, Cr, and P. The sediment sequence at Site 835 is dominated by allochthonous sediments, either muddy debris-flow deposits, coherent rafted blocks, or thick clayey nannofossil ooze turbidites. Since 2.9 Ma, only 25% of the 133 m of sediments deposited represents hemipelagic deposition, with an average sedimentation rate of 1.5 cm/k.y.. Allochthonous sediments were the main sediment type deposited during the Brunhes geomagnetic Epoch and make up 80% of the thickness of sediment deposited during this period. Short intervals of mainly hemipelagic deposition occurred from 0.4 to 0.9 Ma, 1.0 to 1.4 Ma, and 1.7 to 2.1 Ma. However, allochthonous sediments were again the dominant sediment type deposited between 2.1 and 2.5 Ma, with a large slide complex emplaced around 2.5 Ma. We conclude that the adjacent high ground, surrounding the basin in which Site 835 was drilled, was affected by marked instability throughout the late Pliocene and Pleistocene. In contrast, sedimentation at Site 834 during this period has been dominated by hemipelagic deposition, with redeposited sediments making up slightly less than 17% of the total thickness of sediment deposited since 2.3 Ma. However, there was a marked increase in frequency and magnitude of redeposited sediments at around 0.2 Ma at Site 834, which broadly corresponds to the onset of a major episode of turbidite and debris-flow emplacement beginning about 0.4 Ma at Site 835. This episode of instability at both sites may be the effect of the approach and passing of the Central Lau propagator at the latitude of Sites 834 and 835 at about 0.5 Ma.

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Subseafloor sediments harbor over half of all prokaryotic cells on Earth (Whitman et al., 1998). This immense number is calculated from numerous microscopic acridine orange direct counts (AODCs) conducted on sediment cores drilled during the Ocean Drilling Program (ODP) (Parkes et al., 1994, doi:10.1038/371410a0, 2000, doi:10.1007/PL00010971). Because these counts cannot differentiate between living and inactive or even dead cells (Kepner and Pratt, 1994; Morita, 1997), the population size of living microorganisms has recently been enumerated for ODP Leg 201 sediment samples from the equatorial Pacific and the Peru margin using ribosomal ribonucleic acid targeting catalyzed reporter deposition-fluorescence in situ hybridization (CARD-FISH) (Schippers et al., 2005, doi:10.1038/nature03302). A large fraction of the subseafloor prokaryotes were alive, even in very old (16 Ma) and deep (>400 m) sediments. In this study, black shale samples from the Demerara Rise (Erbacher, Mosher, Malone, et al., 2004, doi:10.2973/odp.proc.ir.207.2004) were analyzed using AODC and CARD-FISH to find out if black shales also harbor microorganisms.

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In late June and July, 1967, the Deep Submergence Research Vehicle (DSRV) ALVIN, aboard its mother ship, LULU, proceeded from the spring base of operations, Nassau, to its home port of Woods Hole. During this trip, from July 2 to July 14, a series of five dives were made by ALVIN on the Blake Plateau off Georgia and South Carolina, and on the continental slope north of Cape Hatteras. One of the objectives of the dive was to investigate the manganese and phosphate deposits of the Blake Plateau.

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The sedimentary succession drilled at Sites 840 and 841 on the Tonga forearc allows the sedimentary evolution of the active margin to be reconstructed since shortly after the initiation of subduction during the mid Eocene. Sedimentation has been dominated by submarine fan deposits, principally volcaniclastic turbidites and mass-flows derived from the volcanic arc. Volcaniclastic sedimentation occurred against a background of pelagic nannofossil sedimentation. A number of upward-fining cycles are recognized and are correlated to regional tectonic events, such as the rifting of the Lau Basin at 5.6 Ma. Episodes of sedimentation dating from 16.0 and 10.0 Ma also correlate well with major falls in eustatic sea level and may be at least partially caused by the resulting enhanced erosion of the arc edifice. The early stages of rifting of the Lau Basin are marked by the formation of a brief hiatus at Site 840 (Horizon A), probably a result of the uplift of the Tonga Platform. Controversy exists as to the degree and timing of the uplift of Site 840 before Lau Basin rifting, with estimates ranging from 2500 to 300 m. Structural information favors a lower value. Breakup of the Tonga Arc during rifting resulted in deposition of dacite-dominated, volcaniclastic mass flows, probably reflecting a maximum in arc volcanism at this time. A pelagic interval at Site 840 suggests that no volcanic arc was present adjacent to the Tonga Platform from 5.0 to 3.0 Ma. This represents the time between separation of the Lau Ridge from the Tonga Platform and the start of activity on the Tofua Arc at 3.0 Ma. The sedimentary successions at both sites provide a record of the arc volcanism despite the reworked nature of the deposits. Probe analyses of volcanic glass grains from Site 840 indicate a consistent low-K tholeiite chemistry from 7.0 Ma to the present, possibly reflecting sediment sourcing from a single volcanic center over long periods of time. Trace and rare-earth-element (REE) analyses of basaltic glass grains indicate that thinning of the arc lithosphere had begun by 7.0 Ma and was the principle cause of a progressive depletion of the high-field-strength (HFSE), REE, and large-ion-lithophile (LILE) elements within the arc magmas before rifting. Magmatic underplating of the Tofua Arc has reversed this trend since that time. Increasing fluid flux from the subducting slab since basin rifting has caused a progressive enrichment in LILEs. Subduction erosion of the underside of the forearc lithosphere has caused continuous subsidence and tilting toward the trench since 37.0 Ma. Enhanced subsidence occurred during rifting of the South Fiji and Lau basins. Collision of the Louisville Ridge with the trench has caused no change in the nature of the sedimentation, but it may have been responsible for up to 300 m of uplift at Site 840.

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Edition limited to 800 numbered sets.

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"PN-AAL-005"--Cover.

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<div><p><b>Back Row: </b>Lee Taggert, Paul Schmidt, Phil Bromley, Jeff Long, Bob Chmiel, TJ Weist, Jim Hermann, Bobby Morrison, Tirrel Burton, Lloyd Carr, Jerry Hanlon, Tom Reed, Bill Harris, Cam Cameron, Les Miles, Mike Gittleson, Jon Falk, Todd Jager, Ed Whited</p><p><b>7th Row: </b>Ken Mouton, Kevin Keenan, Jeff Watson, Jim Plocki, Mike Landsittel, Bob Bland, James Buda, *John Davidson, *Jason Wallace, Michael Tilmann, Adam Pratt, Todd Richards, *Jay Riemersma, Mike Bossary, Irv Sigler, Phil Dorn, Matt McCoy, Mark Woodson, Mark Bonnsetter</p><p><b>6th Row: </b>*Brad Blazy, Mike Sullivan, Jason Carr, Walter Reggan, Felman Malveaux, Jason Horn, Eddie Davis, Jamie Mignon, Trent Zenkewicz, Trezelle Jenkins, Tyrone Wheatley, Paul Barry, Che Foster, Joe Marinaro, Carig Randall, Ante Skorput, Damon Southward, Brian Smith, Rob Vanderleest</p><p><b>5th Row: </b>Pete Elezovic, Joshua Wuerfel, Justin Carlson, Michael Looby, Matt Brady, Brian Foster, Mike Lyons, Marc Elliott, *Gordon Laro, John Jaeckin, Shonte Peoples, Julian Swearengin, Dave Henkel, Sergio Gasperoni, Eric Lovell, Mike Julier, Lasker Smith, Dorian Taylor</p><p><b>4th Row: </b>Mike Lewis, *Charlie Stumb, Walter Smith, Jason Kendrick, Shawn Miller, Greg McThomas, Steve Morrison, Deon Johnson, Todd Collins, Ricky Powers, Nate Holdren, Matt Dyson, Tony Henderson, Gannon Dudlar, Marcus Walker, Jesse Johnson, Bobby Powers, Troy Plate, Ron Buff</p><p><b>3rd Row: </b>John Albertson, Craig Randall, Mike Nadlicki, William Steuk, Dennis Washington, Coleman Wallace, Steve Rekowski, Dave Dobreff, Tony McGee, Burnie Legette, Derrick Alexander, Sylvester Stanley, Marc Burkholder, Marc Milia, Alfie Burch, Eric Graves, Ninef Aghakhan, Tony Blankenship, Kevin Hedding</p><p><b>2nd Row: </b>Brian Foster, Paul Manning, Doug Skene, Brian Wallace, Rob Doherty, Martin Davis, Neil Simpson, Matt Elliott, Erick Anderson, Greg Skrepenak, Mike Evans, Alex Marshall, Chris Hutchinson, Joe Cocozzo, Steve Everitt, Eric Knuth, John Woodlock, Barry Kelley</p><p><b>Front Row: </b> Eddie Azcona, Adam Pratt, Dwayne Ware, Pat Maloney, Yale Van Dyne, Dave Diebolt, J.D. Carlson, Corwin Brown, Elvis Grbac, Desmond Howard, Otis Williams, Lance Dottin, Ken Sollom, Dave Ritter, Brian Townsend, Randy Stark Livetius Johnson, Head Coach Gary Moeller</p><p>* = no longer on team</p></div>

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<div><p><b>Back Row: </b>Todd Jager, Paul Schmidt, Phil Bromley, Bob Chmiel, Mike Gittleson, Fred Jackson, Jim Herrmann, Bobby Morrison, Lloyd Carr, Cam Cameron, Les Miles, Bill Harris, Greg Mattison, Mike DeBord, T.J. Weist, Jeff Long, Jon Falk</p><p><b>7th Row: </b>Brent Jaco, Ken Mouton, Jim Plocki, Mark Venise, Paul Peristeris (99), Julian Norment (50), Donilo Voyne (89), Scott Seymour (29), Zack Freedman (24), Michael Mangan (71), Ty Consolino (14), Jared Lancer (39), Matt McCoy, Mark Woodson, John McNulty, Bill Priestap</p><p><b>6th Row: </b>Dorie Hicks, Jeff Travis, Stephen Evans (92), Harold Goodwin (56), Tom Guynes (75), Remy Hamilton (19), Mercury Hayes (9), Jarrett Irons (37), Woodrow Hankins (23), Damon Jones (85), Ty Law (22), Earl Little (21), Tyrone Noble (42), Steve King (27), Rod Payne (64), Bob Bland, Ed Whited, Lee Taggart</p><p><b>5th Row: </b>Jeff Zaeske (34), Bryan Sanford (38), Chad Peterson (42), Kerwin Waldroup (59), Deollo Anderson (17), Eric Wendt (65), Mark Bolach (99), Charles Winters (35), Eric Boykin (8), Mike Vanderbeek (45), Shawn Collins (32), Amani Toomer (18), Ray Edmonds (93), Jon Runyan (69), Brian Letscher (27), Adam Pratt (39), Lasker Smith (25), Michael Tilmann (35)</p><p><b>4th Row: </b>Brion Smith (53), Ante Skorput (62), Jay Riemersma (16), Jason Carr (13), Joe Marinaro (73), Che' Foster (33), Paul Barry (78), Tyrone Wheatley (6), Trent Zenkewicz (76), Trezelle Jenkins (77), Mike Sullivan (61), Felman Malveaux (84), Jason Horn (94), Ed Davis (26), Rob Vanderleest (58), Jamie Mignon (49), Todd Richards (29), Sergio Gasperoni (44)</p><p><b>3rd Row: </b>Erik Lovell (17), Marc Elliot (63), Jesse Johnson (30), Shonte Peoples (3), Shawn Miller (57) Walter Smith (2), Marcus Walker (46), Matt Dyson (91), Steve Morrison (36), Todd Collins (10), Ricky Powers (12), Nate Holdren (4), Tony Henderson (79), Greg McThomas (41), Gannon Dudlar (55), Bobby Powers (95), Deon Johnson (28), John Jaeckin (82), Joshua Wuerful (14)</p><p><b>2nd Row: </b>Mike Lewis (71), Mike Nadlicki (44), Paul Manning (54), Dave Dobreff (48), Steve Rekowski (66), Doug Skene (72), Martin Davis (86), Rob Doherty (70), Tony McGee (88), Chris Hutchison (97), Joe Cocozzo (68), Steve Everitt (51), Ninef Aghakhan (90), Marc Milia (67), Eric Graves (52), Derrick Alexander (1), Ron Buff (25), Troy Plate (74)</p><p><b>Front Row: </b> Julian Swearengin (81), Chris Stapleton (18), Dennis Washington (24), Coleman Wallace (5), Dwayne Ware (8), Pat Maloney (43), Corwin Brown (20), Elvis Grbac (15), Burnie Legette (40), Buster Stanley (60), Marc Burkholder (80), Alfie Burch (7), Tony Blankenship (31), Eddie Azcona (9), William Steuk (51), Peter Elezovic (16), Brian Foster (19), Gary Moeller (Head Coach)</p></div>

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<div><p>front: Kalei Beamon, Lindsay Aland, Jennifer Lev, Amy Malik, Frederika Adam</p><p>back: Assistant Coach Wendy Gilles, Lisa Worzniak, Stacy Berg, Kim Pratt, Christine Schmeidel, Head Coach Elizabeth "Bitsy" Ritt</p></div>

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<div><p>front: Kalei Beamon, Lindsay Aland, Jennifer Lev, Amy Malik, Frederika Adam</p><p>back: Assistant Coach Wendy Gilles, Lisa Worzniak, Stacy Berg, Kim Pratt, Christine Schmeidel, Head Coach Elizabeth "Bitsy" Ritt</p></div>