Adrian J. Boyce
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View article: Constraining the fluid sources of gold-bearing veins in orogenic belts using sulfur and lead isotopes: A case study from Loch Tay, Scotland (UK)
Constraining the fluid sources of gold-bearing veins in orogenic belts using sulfur and lead isotopes: A case study from Loch Tay, Scotland (UK) Open
Unpicking the fluid and metal sources, and the number of mineralizing events, can be challenging because fluids from different origins mix and can overprint existing mineralization. Crustal and/or basinal fluids may play a role in “dilutin…
View article: Origin of the Jadar Volcano-Sedimentary Li-B Deposit, Serbia
Origin of the Jadar Volcano-Sedimentary Li-B Deposit, Serbia Open
The Jadar deposit (Serbia) is a unique end member of the volcano-sedimentary Li deposit class, where the main ore mineral is jadarite (LiNaSiB3O7(OH)), to date only recorded at the Jadar locality. We provide the first account of the featur…
View article: Constraining O isotope equilibrium exchange between CO2 and water during fluid cycling in a closed system
Constraining O isotope equilibrium exchange between CO2 and water during fluid cycling in a closed system Open
Residual trapping is a critical component of secure geological CO2 storage. Quantification of the amount of CO2 residually trapped plays a key role in predicting CO2 plume migration, immobilisation and storage security. However, it is diff…
View article: Reconstruction of the Temperature Conditions of Burial-Related Pressure Solution by Clumped Isotopes Validates the Analysis of Sedimentary Stylolites Roughness as a Reliable Depth Gauge
Reconstruction of the Temperature Conditions of Burial-Related Pressure Solution by Clumped Isotopes Validates the Analysis of Sedimentary Stylolites Roughness as a Reliable Depth Gauge Open
Rough surfaces known as stylolites are common geological features that are developed by pressure solution, especially in carbonate rocks, where they are used as strain markers and as stress gauges. As applications are developing in various…
View article: Origin of the mineralizing fluids involved in the formation of the scheelite skarn in the Beleleita area (Edough NE, Algeria): Fluid inclusion and stable S, O and C isotope study
Origin of the mineralizing fluids involved in the formation of the scheelite skarn in the Beleleita area (Edough NE, Algeria): Fluid inclusion and stable S, O and C isotope study Open
This study investigates the first stable S-, O- and C-isotopes data on the Beleleita scheelite skarn deposit to assess the origin of the mineralising fluids involved in the formation of the skarn and related W-As-Bi-(Au) mineralisation. Tw…
View article: The sulphur isotope record of sulphides in paleoproterozoic successions, North-West Scotland
The sulphur isotope record of sulphides in paleoproterozoic successions, North-West Scotland Open
Sulphide minerals in the Palaeoproterozoic Loch Maree Group at Kerry Road, Gairloch, North-West Scotland, have a near-zero sulphur isotope composition of magmatic origin. New isotopic measurements in the region show a wider range of compos…
View article: Syn-Sedimentary Exhalative or Diagenetic Replacement? Multi-Proxy Evidence for Origin of Metamorphosed Stratiform Barite–Sulfide Deposits near Aberfeldy, Scottish Highlands
Syn-Sedimentary Exhalative or Diagenetic Replacement? Multi-Proxy Evidence for Origin of Metamorphosed Stratiform Barite–Sulfide Deposits near Aberfeldy, Scottish Highlands Open
Bedded barite, Fe-Zn-Pb sulfides, carbonates, and cherts within Ediacaran (Dalradian Supergroup) graphitic metasediments near Aberfeldy in Scotland have previously been interpreted as chemical sediments precipitated from hydrothermal fluid…
View article: GIS analysis for the selection of optimal sites for mine water geothermal energy application: a case study of Scotland's mining regions
GIS analysis for the selection of optimal sites for mine water geothermal energy application: a case study of Scotland's mining regions Open
Water within flooded coal mines can be abstracted via boreholes or shafts, where heat can be extracted from (or rejected to) it to satisfy surface heating (or cooling) demands. Following use, water can be reinjected into the mine workings …
View article: Graphitization of Neoproterozoic sedimentary marbles in The Aird, Scottish Highlands
Graphitization of Neoproterozoic sedimentary marbles in The Aird, Scottish Highlands Open
Graphite occurs in Neoproterozoic (probable Loch Ness Supergroup) marbles of The Aird, in the Northern Highland Terrane, Scotland. The graphite occurs particularly in association with phlogopite mica, and also with other micas and Mg-chlor…
View article: Deciphering the Central African Copperbelt sedimentary succession: Chemostratigraphy of the Neoproterozoic metasedimentary sequences at Lubambe, Zambia
Deciphering the Central African Copperbelt sedimentary succession: Chemostratigraphy of the Neoproterozoic metasedimentary sequences at Lubambe, Zambia Open
A +1.6 km borehole, southeast of the Lubambe Copper Mine, Zambia has intersected a seemingly continuous sedimentary sequence spanning the Neoproterozoic Kantanga Supergroup sedimentary succession within the Central African Copperbelt. This…
View article: Fingerprinting Fluid Source in Calcite Veins: Combining LA-ICP-MS U-Pb Calcite Dating with Trace Elements and Clumped Isotope Palaeothermometry
Fingerprinting Fluid Source in Calcite Veins: Combining LA-ICP-MS U-Pb Calcite Dating with Trace Elements and Clumped Isotope Palaeothermometry Open
Application of geochemical proxies to vein minerals - particularly calcite - can fingerprint the source of fluids controlling various important geological processes from seismicity to geothermal systems. Determining fluid source, e.g. mete…
View article: Sequence stratigraphical and palaeoenvironmental implications of Cenomanian–Santonian dinocyst assemblages from the Trans‐Sahara epicontinental seaway: a multivariate statistical approach
Sequence stratigraphical and palaeoenvironmental implications of Cenomanian–Santonian dinocyst assemblages from the Trans‐Sahara epicontinental seaway: a multivariate statistical approach Open
The Cretaceous was punctuated by episodic flooding of continental margins forming epicontinental seas. The Trans‐Sahara Seaway was one of these epicontinental seas, connecting the Gulf of Guinea with the Tethys Ocean. In this study, data i…
View article: Strongly peraluminous granites provide independent evidence for an increase in biomass burial across the Precambrian–Phanerozoic boundary
Strongly peraluminous granites provide independent evidence for an increase in biomass burial across the Precambrian–Phanerozoic boundary Open
Strongly peraluminous granites (SPGs) are generated by the partial melting of sedimentary rocks and can thus provide a novel archive to reveal secular trends in Earth’s environmental history that integrate siliciclastic sedimentary litholo…
View article: The water content of <scp>CM</scp> carbonaceous chondrite falls and finds, and their susceptibility to terrestrial contamination
The water content of <span>CM</span> carbonaceous chondrite falls and finds, and their susceptibility to terrestrial contamination Open
CM carbonaceous chondrites can be used to constrain the abundance and H isotopic composition of water and OH in C‐complex asteroids. Previous measurements of the water/OH content of the CMs are at the higher end of the compositional range …
View article: Zebra dolomites of the Spessart, Germany: implications for hydrothermal systems of the European Zechstein Basin
Zebra dolomites of the Spessart, Germany: implications for hydrothermal systems of the European Zechstein Basin Open
Zebra dolomites have a distinctive texture and are a peculiar structural variety of dolostones often encountered in the vicinity of base metal deposits commonly in the Mississippi Valley-Type (MVT). We investigate origin and evolution of t…
View article: Ore depositional processes at the carbonate-hosted Tara Deep Zn-Pb deposit, Navan, Ireland
Ore depositional processes at the carbonate-hosted Tara Deep Zn-Pb deposit, Navan, Ireland Open
The Tara Deep Zn-Pb deposit (currently 26.2 Mt @ 8.4% Zn, 1.6% Pb) is the latest major discovery by Boliden Tara Mines (first announced in 2016) which significantly adds to the existing world-class Navan deposit. Located 2 km south of the …
View article: Equilibrium partitioning and isotopic fractionation of nitrogen between biotite, plagioclase, and K-feldspar during magmatic differentiation
Equilibrium partitioning and isotopic fractionation of nitrogen between biotite, plagioclase, and K-feldspar during magmatic differentiation Open
A significant portion of the continental crust is composed of plutonic igneous rocks. However, little is known about the geochemical behaviour of N between the different minerals during magmatic differentiation. To provide new constraints …
View article: Stable Isotope (δ18O, δD) Composition of Magmatic Fluids Exsolved from an Active Alkaline Magma Chamber—The Case of the AD 79 Magma Chamber of Vesuvius
Stable Isotope (δ18O, δD) Composition of Magmatic Fluids Exsolved from an Active Alkaline Magma Chamber—The Case of the AD 79 Magma Chamber of Vesuvius Open
This work documents, for the first time, the calculated oxygen and hydrogen isotope composition of the brines exsolved from the peripheral margin of the active magma alkaline chamber that fed the AD 79 (“Pompei”) eruption of Vesuvius. The …
View article: The stable isotope (C, O, S) record of Paleoproterozoic marbles, Scotland
The stable isotope (C, O, S) record of Paleoproterozoic marbles, Scotland Open
Paleoproterozoic marbles occur widely in NW Scotland. The isotopically heavy carbonate carbon ( 13 C >3‰) in marbles that characterizes the worldwide Lomagundi–Jatuli Event (2.3–2.05 Ga) is recognized in the Laurentian Foreland, the Moin…
View article: Basin scale evolution of zebra textures in fault‐controlled, hydrothermal dolomite bodies: Insights from the Western Canadian Sedimentary Basin
Basin scale evolution of zebra textures in fault‐controlled, hydrothermal dolomite bodies: Insights from the Western Canadian Sedimentary Basin Open
Structurally controlled dolomitization typically involves the interaction of high‐pressure (P), high‐temperature (T) fluids with the surrounding host rock. Such reactions are often accompanied by cementation and recrystallization, with the…
View article: The role of organic carbon in the Southern Uplands-Down-Longford Terrane accretionary prism, Scotland and Ireland
The role of organic carbon in the Southern Uplands-Down-Longford Terrane accretionary prism, Scotland and Ireland Open
Carbonaceous shales in the Southern Uplands-Down-Longford Terrane accretionary prism had extremely high potential for hydrocarbon generation in the Lower Paleozoic. Structural thickening in the prism enhanced the rapid generation of oil. S…
View article: A primary magmatic source of nitrogen to Earth’s crust
A primary magmatic source of nitrogen to Earth’s crust Open
The igneous portion of Earth’s continental crust represents a long-term sink of terrestrial nitrogen, but the origin of the nitrogen in this reservoir remains ambiguous. Possible sources include magmatic differentiation of mantle-derived m…
View article: Constraining the Geochemical Fingerprints of Gases from the UK Carboniferous Coal Measures at the Glasgow Geoenergy Observatories Field Site, Scotland
Constraining the Geochemical Fingerprints of Gases from the UK Carboniferous Coal Measures at the Glasgow Geoenergy Observatories Field Site, Scotland Open
Usage of thermal energy contained in abandoned, flooded, coal mines has the potential to contribute to low carbon heating or cooling supply and assist in meeting net-zero carbon emission targets. However, hazardous ground gases, such as CH…
View article: Sulfide Trace Element Signatures and S- and Pb-Isotope Geochemistry of Porphyry Copper and Epithermal Gold-Base Metal Mineralization in the Elatsite–Chelopech Ore Field (Bulgaria)
Sulfide Trace Element Signatures and S- and Pb-Isotope Geochemistry of Porphyry Copper and Epithermal Gold-Base Metal Mineralization in the Elatsite–Chelopech Ore Field (Bulgaria) Open
The Elatsite–Chelopech ore field in the northern part of the Panagyurishte district in Central Bulgaria comprises numerous spatially associated porphyry copper and epithermal gold deposits and prospects. In addition to the mineralization a…
View article: The occurrence of elevated δ34S in dissolved sulfate in a multi-level coal mine water system, Glasgow, UK
The occurrence of elevated δ34S in dissolved sulfate in a multi-level coal mine water system, Glasgow, UK Open
Stable isotopic compositions of δ18O, δ2H and dissolved sulfate δ34S in water from abandoned and flooded coal mines are used to interpret the water's and solutes' origin and interactive history. These isotopic ratios have been determined i…
View article: Combining ground stability investigation with exploratory drilling for mine water geothermal energy development; lessons from exploration and monitoring
Combining ground stability investigation with exploratory drilling for mine water geothermal energy development; lessons from exploration and monitoring Open
Mine water geothermal energy's potential for decarbonization of heating and cooling in the UK has led to increased national interest and development of new projects. In this study, mine water geothermal exploration has been coupled with gr…