A method for nitrite removal in nitrate N and O isotope analyses

2006 ◽  
Vol 4 (7) ◽  
pp. 205-212 ◽  
Author(s):  
Julie Granger ◽  
Daniel M. Sigman ◽  
Maria G. Prokopenko ◽  
Moritz F. Lehmann ◽  
Philippe D. Tortell
Keyword(s):  
Nitrate N ◽  
Nitrite Removal ◽  
O Isotope ◽  
Isotope Analyses

Kaolin polytype evidence for a hot-fluid pulse along Caledonian thrusts during rifting of the European Margin

2004 ◽  
Vol 68 (3) ◽  
pp. 419-432 ◽  
Author(s):  
J. Parnell ◽  
G. Watt ◽  
H. Chen ◽  
H. Wycherley ◽  
A. Boyce ◽  
...  
Keyword(s):  
Heat Flow ◽  
Meteoric Water ◽  
Direct Evidence ◽  
Sedimentary Basins ◽  
High Heat ◽  
Crustal Extension ◽  
Palaeomagnetic Data ◽  
Thrust Zone ◽  
O Isotope ◽  
Isotope Analyses

AbstractSedimentary basins developed along the European margin during the earliest, Permian, stage of proto-Atlantic rifting, during a phase of high heat flow. The proximity of some basins to Caledonian thrusts has implied that rifts locally utilized the basement fabric. New mineralogical and palaeomagnetic data show that thrust planes in the Moine Thrust Zone channelled a pulse of hot fluid in Permian time. The fluids precipitated kaolin in fractures in the thrust zone, and with decreasing intensity away from the zone. The high-temperature polytype dickite is largely confined to major thrust planes. Stable H and O isotope analyses indicate that the parent fluid included meteoric water involved in a hydrothermal system. Coeval hydrothermal hematite has a chemical remanence that dates the fluid pulse as Permian. This is direct evidence for post-orogenic activity in the thrust zone, in which the thrusts vented excess heat during regional crustal extension. The example from the European margin exemplifies the importance of deep-seated structures in the release of heat, and the value of kaolinite polytype mapping as a tool to record anomalous palaeo-heat flow.

scholarly journals Archean crustal evolution in the Southern São Francisco craton, Brazil: Constraints from U-Pb, Lu-Hf and O isotope analyses

Lithos ◽  
2016 ◽  
Vol 266-267 ◽  
pp. 64-86 ◽  
Author(s):  
Capucine Albert ◽  
Federico Farina ◽  
Cristiano Lana ◽  
Gary Stevens ◽  
Craig Storey ◽  
...  
Keyword(s):  
Crustal Evolution ◽  
O Isotope ◽  
Isotope Analyses

scholarly journals Calcite and dolomite formation in the CM parent body: Insight from in situ C and O isotope analyses

2019 ◽  
Vol 260 ◽  
pp. 275-291 ◽  
Author(s):  
M. Telus ◽  
C.M.O'D. Alexander ◽  
E.H. Hauri ◽  
J. Wang
Keyword(s):  
Parent Body ◽  
O Isotope ◽  
Dolomite Formation ◽  
Isotope Analyses

Quartz cementation inhibited by crestal oil charge: Miller deep water sandstone, UK North Sea

Clay Minerals ◽  
2000 ◽  
Vol 35 (1) ◽  
pp. 201-210 ◽  
Author(s):  
A. M. E. Marchand ◽  
R. S. Haszeldine ◽  
C. I. Macaulay ◽  
R. Swennen ◽  
A. E. Fallick
Keyword(s):  
Fluid Inclusion ◽  
North Sea ◽  
Deep Water ◽  
Distinct Pattern ◽  
Reservoir Sandstones ◽  
O Isotope ◽  
Reservoir Porosity ◽  
Quartz Cement ◽  
Reservoir Filling ◽  
Isotope Analyses

AbstractIn the Miller Field, diagenetic quartz abundance, isotopic compositions and salinities of quartz-cementing fluids display a distinct pattern which is related to the structural depth of the reservoir sandstones. Quartz cement volumes increase from the crest of the field (average 6.0±1.5%) towards the flanks of the field (average 13.2±2.1%) and directly reduce reservoir porosity. By integrating petrographic observations with results of fluid inclusion measurements and O isotope analyses of diagenetic quartz, the pattern of quartz cementation is seen to be related to the reservoir filling history. Oil filled the crest of the reservoir first and prevented extensive quartz cementation. At greater depth in the reservoir oil zone, quartz overgrowths continued to precipitate until inhibited by the developing oil column. Oxygen isotope compositions of diagenetic quartz imply that quartz cement continued to precipitate in the water zone of the reservoir up to the present day.

scholarly journals Supplemental Material: A hidden Rodinian lithospheric keel beneath Zealandia, Earth’s newly recognized continent

2021 ◽  
Author(s):  
Rose Turnbull ◽  
et al.
Keyword(s):  
Analytical Methods ◽  
Location Information ◽  
Pb Isotope ◽  
Raw Data ◽  
O Isotope ◽  
Isotope Analyses ◽  
Detailed Outline

Detailed outline of analytical methods, raw data for all O-isotope and Lu-Hf-U-Pb isotope analyses for unknowns and standards, and sample location information.<br>

scholarly journals Supplemental Material: A hidden Rodinian lithospheric keel beneath Zealandia, Earth’s newly recognized continent

2021 ◽  
Author(s):  
Rose Turnbull ◽  
et al.
Keyword(s):  
Analytical Methods ◽  
Location Information ◽  
Pb Isotope ◽  
Raw Data ◽  
O Isotope ◽  
Isotope Analyses ◽  
Detailed Outline

Detailed outline of analytical methods, raw data for all O-isotope and Lu-Hf-U-Pb isotope analyses for unknowns and standards, and sample location information.<br>

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