1-20 OF 2070 RESULTS FOR

Heavy liquids for separation of fossils and sediments

Results shown limited to content with bounding coordinates.
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

REDUCING CHARCOAL ABUNDANCE IN ARCHAEOLOGICAL POLLEN SAMPLES Available to Purchase

VAUGHN M. BRYANT, RICHARD G. HOLLOWAY
Journal: Palynology
Published: 01 February 2009
Palynology (2009) 33 (2): 63–72.
DOI: https://doi.org/10.2113/gspalynol.33.2.63
... with steel sides that were one inch high. When trying to use this procedure for charcoal removal we found that the most effective technique was to pour small amounts of the residue (i.e. the remaining material after all processing was completed but before the use of heavy-liquid separation fluids...
FIGURES
First thumbnail for: REDUCING CHARCOAL ABUNDANCE IN ARCHAEOLOGICAL POLL...
Second thumbnail for: REDUCING CHARCOAL ABUNDANCE IN ARCHAEOLOGICAL POLL...
Third thumbnail for: REDUCING CHARCOAL ABUNDANCE IN ARCHAEOLOGICAL POLL...
View PDF for article title, REDUCING CHARCOAL ABUNDANCE IN ARCHAEOLOGICAL POLLEN SAMPLES
Purchase
Add to Citation Manager for REDUCING CHARCOAL ABUNDANCE IN ARCHAEOLOGICAL POLLEN SAMPLES
Journal Article

Acid-free protocol for extracting pollen from Quaternary sediments Available to Purchase

Rudney de Almeida Santos, Marie-Pierre Ledru
Journal: Palynology
Published: 25 January 2022
Palynology (2022) 46 (1): 1–8.
DOI: https://doi.org/10.1080/01916122.2021.1960916
... metatungstate (H 2 O 40 W 12 .6Na), a non-toxic heavy liquid reported it was close to being 100% effective. Clarke ( 1994 ) described an experiment involving traditional acid digestion (hydrofluoric acid, hydrochloric acid, acetolysis) and two non-acid techniques: sieving and heavy liquid separation. According...
FIGURES
First thumbnail for: Acid-free protocol for extracting pollen from Quat...
Second thumbnail for: Acid-free protocol for extracting pollen from Quat...
Third thumbnail for: Acid-free protocol for extracting pollen from Quat...
View PDF for article title, Acid-free protocol for extracting pollen from Quaternary <span class="search-highlight">sediments</span>
Purchase
Add to Citation Manager for Acid-free protocol for extracting pollen from Quaternary <span class="search-highlight">sediments</span>
Journal Article

An integrated microwave technique for releasing microfossils from an indurated bone bed Available to Purchase

Luke M. Hauser
Published: 28 October 2015
Journal of Micropalaeontology (2016) 35 (1): 62–65.
DOI: https://doi.org/10.1144/jmpaleo2015-005
... kV voltage. The sediment returned was sieved into four size fractions (500, 212, 106 and 75 µm) and then placed in sodium polytungstate (specific gravity 2.8) for heavy liquid separation using the method described by Savage (1988) . The material recovered was of the same quality as that from...
FIGURES
First thumbnail for: An integrated microwave technique for releasing mi...
Second thumbnail for: An integrated microwave technique for releasing mi...
Third thumbnail for: An integrated microwave technique for releasing mi...
View PDF for article title, An integrated microwave technique for releasing microfossils from an indurated bone bed
Purchase
Add to Citation Manager for An integrated microwave technique for releasing microfossils from an indurated bone bed
Journal Article

A guide to preparation protocols in palynology Available to Purchase

James B. Riding
Journal: Palynology
Published: 16 February 2021
Palynology (2021) 45 (S1): 1–110.
DOI: https://doi.org/10.1080/01916122.2021.1878305
... unconsolidated sediments. Bryant and Holloway ( 2009 ) outlined a method of separating charcoal from the remainder of the organic residue using multiple heavy liquid separation using zinc bromide of several specific gravities. Subsequently, Urban et al. ( 2018 ) described a method of using a system of nested...
FIGURES
First thumbnail for: A guide to preparation protocols in palynology
Second thumbnail for: A guide to preparation protocols in palynology
Third thumbnail for: A guide to preparation protocols in palynology
View PDF for article title, A guide to preparation protocols in palynology
Purchase
Add to Citation Manager for A guide to preparation protocols in palynology
Journal Article

Testing of palynological processing techniques: an example using Silurian palynomorphs from Gotland Available to Purchase

DAVID N. GELSTHORPE
Published: 01 May 2002
Journal of Micropalaeontology (2002) 21 (1): 81–86.
DOI: https://doi.org/10.1144/jm.21.1.81
... may be lost when the organic residue is separated from the mineral fraction using centrifuge separation with sodium polytungstate or other heavy liquid. Pyrite present in the fossils will increase the mass of the specimens, and the mineral residue may clump around specimens (individuals with numerous...
FIGURES
First thumbnail for: Testing of palynological processing techniques: an...
Second thumbnail for: Testing of palynological processing techniques: an...
Third thumbnail for: Testing of palynological processing techniques: an...
View PDF for article title, Testing of palynological processing techniques: an example using Silurian palynomorphs from Gotland
Purchase
Add to Citation Manager for Testing of palynological processing techniques: an example using Silurian palynomorphs from Gotland
Book Chapter

An overview of techniques applied to the extraction of non-pollen palynomorphs, their known taphonomic issues and recommendations to maximize recovery Available to Purchase

Author(s)
Matthew J. Pound, Jennifer M. K. O'Keefe, Fabienne Marret
Book: Applications of Non-Pollen Palynomorphs: from Palaeoenvironmental Reconstructions to Biostratigraphy
Series: Geological Society, London, Special Publications
Publisher: Geological Society of London
Published: 21 September 2021
DOI: 10.1144/SP511-2020-40
EISBN: 9781786209986
... ). A similar procedure can also be achieved for sediments or sedimentary rocks using heavy liquid separation to adjust the specific gravity. Zinc bromide, zinc chloride and bromoform have been used for over 60 years ( Frey 1955 ; Staplin et al. 1960 ; Brown 2008 ; Pound et al. 2012 ; Halbritter et al...
Abstract
View PDF for content titled, An overview of techniques applied to the extraction of non-pollen palynomorphs, their known taphonomic issues and recommendations to maximize recovery
Purchase
Add to Citation Manager for An overview of techniques applied to the extraction of non-pollen palynomorphs, their known taphonomic issues and recommendations to maximize recovery

Abstract This chapter synthesizes the most common processing techniques applied to palynomorphs and their known issues. We primarily focus on non-pollen palynomorphs (NPPs), but include studies on pollen grains where the information might be relevant. An overview of recent (2017–19) NPP publications is used to connect the most common techniques to known taphonomic issues. Finally, general recommendations are made to minimize processing bias and maximize NPP recovery.

Journal Article

Oxygen isotope variability in conodonts: implications for reconstructing Palaeozoic palaeoclimates and palaeoceanography Available to Purchase

James R. Wheeley, M. Paul Smith, Ian Boomer
Published: 01 May 2012
Journal of the Geological Society (2012) 169 (3): 239–250.
DOI: https://doi.org/10.1144/0016-76492011-048
... picked directly from acetic and formic residues; further splits were then separated in heavy liquids using either sodium heteropolytungstate or bromoform. Two taxa, Panderodus acostatus (Branson & Branson) and Ozarkodina confluens (Branson & Mehl) were analysed for oxygen isotopes from...
FIGURES
First thumbnail for: Oxygen isotope variability in conodonts: implicati...
Second thumbnail for: Oxygen isotope variability in conodonts: implicati...
Third thumbnail for: Oxygen isotope variability in conodonts: implicati...
View PDF for article title, Oxygen isotope variability in conodonts: implications for reconstructing Palaeozoic palaeoclimates and palaeoceanography
Purchase
Add to Citation Manager for Oxygen isotope variability in conodonts: implications for reconstructing Palaeozoic palaeoclimates and palaeoceanography
Journal Article

Petrology of Bethel Sandstone of South-Central Illinois Available to Purchase

Willard D. Pye
Journal: AAPG Bulletin
Published: 01 January 1944
AAPG Bulletin (1944) 28 (1): 63–122.
DOI: https://doi.org/10.1306/3D93363A-16B1-11D7-8645000102C1865D
... the minerals and is made up of several varieties. A detailed study of quartz grains will yield in most cases as much information in regard to the origin of the sediment and its history as will a study of the heavy minerals, and without the laborious process of making heavy-mineral concentrates. A study...
FIGURES
First thumbnail for: Petrology of Bethel Sandstone of South-Central Ill...
Second thumbnail for: Petrology of Bethel Sandstone of South-Central Ill...
Third thumbnail for: Petrology of Bethel Sandstone of South-Central Ill...
View PDF for article title, Petrology of Bethel Sandstone of South-Central Illinois
Purchase
Add to Citation Manager for Petrology of Bethel Sandstone of South-Central Illinois
Journal Article

Effects of Underground Storage Conditions on Characteristics of Petroleum Available to Purchase

Paul W. Prutzman
Journal: AAPG Bulletin
Published: 01 April 1931
AAPG Bulletin (1931) 15 (4): 455–464.
DOI: https://doi.org/10.1306/3D93299A-16B1-11D7-8645000102C1865D
... distillation obtain bodies of constant boiling point to which a definite molecular weight and structure may be ascribed. When, however, we attempt to separate from each other the liquids constituting the lubricating fraction of the crude, we find that the products of fractional distillation are extremely...
View PDF for article title, Effects of Underground Storage Conditions on Characteristics of Petroleum
Purchase
Add to Citation Manager for Effects of Underground Storage Conditions on Characteristics of Petroleum
Journal Article

Biogenic silica microfossils in sediments of the Permian – Carboniferous Unayzah Formation, Saudi Arabia Open Access

Johanna F.L. Garming, Stephen G. Franks, Holger Cremer, Oscar A. Abbink
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 January 2010
GeoArabia (2010) 15 (1): 119–132.
DOI: https://doi.org/10.2113/geoarabia1501119
... three general steps: (1) removal of organic material, carbonate, and clay particles; (2) repeated heavy liquid flotation for the extraction and concentration of BSPs; and (3) slide preparation. A step-by-step description of the procedure is provided in Table 1 . The use of sedimentation trays...
FIGURES
First thumbnail for: Biogenic silica microfossils in <span class="searc...
Second thumbnail for: Biogenic silica microfossils in <span class="searc...
Third thumbnail for: Biogenic silica microfossils in <span class="searc...
View PDF for article title, Biogenic silica microfossils in <span class="search-highlight">sediments</span> of the Permian – Carboniferous Unayzah Formation, Saudi Arabia
Add to Citation Manager for Biogenic silica microfossils in <span class="search-highlight">sediments</span> of the Permian – Carboniferous Unayzah Formation, Saudi Arabia
Journal Article

Origin of Petroleum—A Review Available to Purchase

Nelson P. Stevens
Journal: AAPG Bulletin
Published: 01 January 1956
AAPG Bulletin (1956) 40 (1): 51–61.
DOI: https://doi.org/10.1306/5CEAE2F8-16BB-11D7-8645000102C1865D
... to be a natural product of both marine and non-marine plants and animals. More recently, P. V. Smith, using chromatography, separated organic extracts of recent marine sediments into liquid saturated hydrocarbons, aromatic hydrocarbons, and a fraction containing oxygen, nitrogen, and/or sulphur derivatives...
View PDF for article title, Origin of Petroleum—A Review
Purchase
Add to Citation Manager for Origin of Petroleum—A Review
Journal Article

Mercury isotope fractionation in fossil hydrothermal systems Available to Purchase

Christopher N. Smith, Stephen E. Kesler, Björn Klaue, Joel D. Blum
Journal: Geology
Published: 01 October 2005
Geology (2005) 33 (10): 825–828.
DOI: https://doi.org/10.1130/G21863.1
... compositions in the vapor. These combined effects are postulated to produce a vapor containing isotopically light Hg and a residual liquid at depth containing isotopically heavy Hg. The prepared samples were diluted to 40 ± 4 ppb Hg and introduced into a Nu Plasma MC-ICP-MS, using continuous-flow cold...
FIGURES
First thumbnail for: Mercury isotope fractionation in <span class="sear...
Second thumbnail for: Mercury isotope fractionation in <span class="sear...
Third thumbnail for: Mercury isotope fractionation in <span class="sear...
View PDF for article title, Mercury isotope fractionation in <span class="search-highlight">fossil</span> hydrothermal systems
Purchase
Add to Citation Manager for Mercury isotope fractionation in <span class="search-highlight">fossil</span> hydrothermal systems
Journal Article

Salt biostratigraphy: The Miocene palynological assemblages from the Wieliczka Formation, southern Poland Available to Purchase

Gil Machado, Manuel Casas-Gallego, Stanisław Burliga
Journal: AAPG Bulletin
Published: 01 January 2023
AAPG Bulletin (2023) 107 (1): 151–167.
DOI: https://doi.org/10.1306/07142221125
... and partially indurated sediments, using physical disaggregation, successive sieving, and heavy liquid density separation ( Riding and Kyffin-Hughes, 2004 , 2007 , 2011 ). However, for evaporites and associated sediments, the standard acid-based methods are not readily effective because most of the evaporite...
FIGURES
First thumbnail for: Salt biostratigraphy: The Miocene palynological as...
Second thumbnail for: Salt biostratigraphy: The Miocene palynological as...
Third thumbnail for: Salt biostratigraphy: The Miocene palynological as...
View PDF for article title, Salt biostratigraphy: The Miocene palynological assemblages from the Wieliczka Formation, southern Poland
Purchase
Add to Citation Manager for Salt biostratigraphy: The Miocene palynological assemblages from the Wieliczka Formation, southern Poland
Journal Article

Mineralogy of Late Upper Cretaceous, Paleocene, and Eocene Sandstones of Los Banos District, West Border of San Joaquin Valley, California Available to Purchase

S. N. Daviess
Journal: AAPG Bulletin
Published: 01 January 1946
AAPG Bulletin (1946) 30 (1): 63–83.
DOI: https://doi.org/10.1306/3D9337C6-16B1-11D7-8645000102C1865D
.... The samples were then washed to remove clay and fine silt particles, and were screened on an 80-mesh screen. A measured amount of the material that passed through the screen was treated with bromoform (specific gravity 2.85) and the percentage of heavy minerals in the separate was determined by volumetric...
FIGURES
First thumbnail for: Mineralogy of Late Upper Cretaceous, Paleocene, an...
Second thumbnail for: Mineralogy of Late Upper Cretaceous, Paleocene, an...
Third thumbnail for: Mineralogy of Late Upper Cretaceous, Paleocene, an...
View PDF for article title, Mineralogy of Late Upper Cretaceous, Paleocene, and Eocene Sandstones of Los Banos District, West Border of San Joaquin Valley, California
Purchase
Add to Citation Manager for Mineralogy of Late Upper Cretaceous, Paleocene, and Eocene Sandstones of Los Banos District, West Border of San Joaquin Valley, California
Journal Article

Placer Magnetite-sand and By-product Iron, Generated during the Beneficiation of Mineral Sand Ilmenite to High-Titanium Products, as Potential Alternatives to the High-Grade Fe-ore for Steel Making Available to Purchase

R. Dhana Raju
Published: 01 February 2022
Jour. Geol. Soc. India (2022) 98 (2): 165–168.
DOI: https://doi.org/10.1007/s12594-022-1952-y
... & Brothers, New York , 718 p. Purcell , W. , Sinha , M.K. , Vilakazai , A.Q. and Nete , M. (2020) Selective precipitation study for the separation of iron and titanium . Hydrometallurgy , v. 191 , 105242 . Ravi , G.S. (2021) Shoreline Heavy Mineral Sand Deposits...
View PDF for article title, Placer Magnetite-sand and By-product Iron, Generated during the Beneficiation of Mineral Sand Ilmenite to High-Titanium Products, as Potential Alternatives to the High-Grade Fe-ore for Steel Making
Purchase
Add to Citation Manager for Placer Magnetite-sand and By-product Iron, Generated during the Beneficiation of Mineral Sand Ilmenite to High-Titanium Products, as Potential Alternatives to the High-Grade Fe-ore for Steel Making
Journal Article

Origin of Hydrocarbons of Uinta Basin, Utah Available to Purchase

John M. Hunt, Francis Stewart, Parke A. Dickey
Journal: AAPG Bulletin
Published: 01 August 1954
AAPG Bulletin (1954) 38 (8): 1671–1698.
DOI: https://doi.org/10.1306/5CEAE01C-16BB-11D7-8645000102C1865D
... by some largely as facies terms to differentiate sediments which were believed to be of different age but actually were deposited simultaneously. The Wasatch is predominantly fluviatile and continental, consisting of redbeds and heavy sands. Much of what has been called Wasatch in the cliffs along...
FIGURES
First thumbnail for: Origin of Hydrocarbons of Uinta Basin, Utah
Second thumbnail for: Origin of Hydrocarbons of Uinta Basin, Utah
Third thumbnail for: Origin of Hydrocarbons of Uinta Basin, Utah
View PDF for article title, Origin of Hydrocarbons of Uinta Basin, Utah
Purchase
Add to Citation Manager for Origin of Hydrocarbons of Uinta Basin, Utah
Journal Article

Origin and Evolution of Hydrocarbons in Early Toarcian Shales, Paris Basin, France Available to Purchase

B. Tissot, Y. Califet-Debyser, G. Deroo, J. L. Oudin
Journal: AAPG Bulletin
Published: 01 December 1971
AAPG Bulletin (1971) 55 (12): 2177–2193.
DOI: https://doi.org/10.1306/819A3E2E-16C5-11D7-8645000102C1865D
... all parameters except temperature and pressure (both related to burial of sediments) remain constant—age, nature of fossil organisms and clay minerals, and conditions of deposition (which were fairly homogeneous in the formation across the surveyed area). The amounts of the different organic...
FIGURES
First thumbnail for: Origin and Evolution of Hydrocarbons in Early Toar...
Second thumbnail for: Origin and Evolution of Hydrocarbons in Early Toar...
Third thumbnail for: Origin and Evolution of Hydrocarbons in Early Toar...
View PDF for article title, Origin and Evolution of Hydrocarbons in Early Toarcian Shales, Paris Basin, France
Purchase
Add to Citation Manager for Origin and Evolution of Hydrocarbons in Early Toarcian Shales, Paris Basin, France
Journal Article

VALIDATION OF THE MIOCENE FUNGAL SPORE MEDIAVERRUNITES FROM MIZORAM, INDIA Available to Purchase

BHARATI NANDI, ATREYEE SINHA
Journal: Palynology
Published: 01 January 2007
Palynology (2007) 31 (1): 95–100.
DOI: https://doi.org/10.2113/gspalynol.31.1.95
... comprise sandstones and minor shale and siltstone intercalations. Standard laboratory techniques using hydrochloric acid, hydrofluoric acid, nitric acid, 5% potassium hydroxide solution, and heavy liquid separation were used to extract and concentrate the palynomorphs. The heavy liquid used was a mixture...
FIGURES
First thumbnail for: VALIDATION OF THE MIOCENE FUNGAL SPORE MEDIAVERRUN...
Second thumbnail for: VALIDATION OF THE MIOCENE FUNGAL SPORE MEDIAVERRUN...
Third thumbnail for: VALIDATION OF THE MIOCENE FUNGAL SPORE MEDIAVERRUN...
View PDF for article title, VALIDATION OF THE MIOCENE FUNGAL SPORE MEDIAVERRUNITES FROM MIZORAM, INDIA
Purchase
Add to Citation Manager for VALIDATION OF THE MIOCENE FUNGAL SPORE MEDIAVERRUNITES FROM MIZORAM, INDIA
Journal Article

HEAVY MINERALS FROM THE VIKING FORMATION, WEST CENTRAL ALBERTA Available to Purchase

H. R. Young
Published: 01 September 1965
Bulletin of Canadian Petroleum Geology (1965) 13 (3): 397–404.
DOI: https://doi.org/10.35767/gscpgbull.13.3.397
...H. R. Young ABSTRACT A heavy mineral assemblage from the Viking sandstone of west-central Alberta indicates that pre-existing sedimentary rocks were the major source of sediments. Igneous and metamorphic rocks also made some contribution. 39 7 BULLETIN OF CANADIAN PETROLEUM GEOLOG Y VOL . 13...
View PDF for article title, <span class="search-highlight">HEAVY</span> MINERALS FROM THE VIKING FORMATION, WEST CENTRAL ALBERTA
Purchase
Add to Citation Manager for <span class="search-highlight">HEAVY</span> MINERALS FROM THE VIKING FORMATION, WEST CENTRAL ALBERTA
Journal Article

A NEW LOOK AT THE OCCURRENCES OF THE RARE-EARTH ELEMENTS IN THE GEORGIA KAOLINS Available to Purchase

W. Crawford Elliott, Daniel J. Gardner, Prakash Malla, Ed Riley
Published: 01 July 2018
Clays and Clay Minerals (2018) 66 (3): 245–260.
DOI: https://doi.org/10.1346/CCMN.2018.064096
... relative to Upper Continental Crust (UCC) in the heavy-mineral subfraction separated from the coarse fractions (>44 μm). The use of a heavy liquid (lithium metatung-state, LMT) resulted in the separation of potentially mineable concentrations of the REE (1600–5000 mg/kg total REE ), especially...
FIGURES
First thumbnail for: A NEW LOOK AT THE OCCURRENCES OF THE RARE-EARTH EL...
Second thumbnail for: A NEW LOOK AT THE OCCURRENCES OF THE RARE-EARTH EL...
Third thumbnail for: A NEW LOOK AT THE OCCURRENCES OF THE RARE-EARTH EL...
View PDF for article title, A NEW LOOK AT THE OCCURRENCES OF THE RARE-EARTH ELEMENTS IN THE GEORGIA KAOLINS
Purchase
Add to Citation Manager for A NEW LOOK AT THE OCCURRENCES OF THE RARE-EARTH ELEMENTS IN THE GEORGIA KAOLINS