Acid-saline-lake Systems of the Triassic Mercia Mudstone Group, County Antrim, Northern Ireland

2018 ◽  
Vol 88 (3) ◽  
pp. 385-398 ◽  
Author(s):  
Anna Sofia Andeskie ◽  
Kathleen C. Benison ◽  
Lynnette A. Eichenlaub ◽  
Robert Raine
Keyword(s):  
Northern Ireland ◽  
Saline Lake ◽  
County Antrim ◽  
Lake Systems

Redistributing the Population: GIS Adds Value to Historical Demography

1996 ◽  
Vol 8 (2) ◽  
pp. 90-104 ◽  
Author(s):  
Janette Lee
Keyword(s):  
Northern Ireland ◽  
Settlement Pattern ◽  
Historical Demography ◽  
Water Bodies ◽  
Choropleth Mapping ◽  
County Antrim ◽  
Gis Software

A model for more accurately representing the distribution of population is currently under development using some of the functionality of the Arc/Info GIS software. Included are factors for settlement pattern, topography and the presence of water bodies. The model is tested on County Antrim in Northern Ireland and the value of traditional choropleth mapping assessed in comparison with the output from the model.

AN ACID PERENNIAL SALINE LAKE SYSTEM FROM THE TRIASSIC MERCIA MUDSTONE GROUP IN THE CARNDUFF 02 CORE, NORTHERN IRELAND

2016 ◽  
Author(s):  
Anna Sofia Andeskie ◽  
◽  
Kathleen C. Benison ◽  
Lynnette A. Eichenlaub
Keyword(s):  
Northern Ireland ◽  
Saline Lake ◽  
Lake System

Some aspects of Tertiary acid magmatism in NE Ireland

1984 ◽  
Vol 48 (348) ◽  
pp. 351-363 ◽  
Author(s):  
I. G. Meighan ◽  
D. Gibson ◽  
D. N. Hood
Keyword(s):  
Northern Ireland ◽  
Central Complex ◽  
Geochemical Data ◽  
Igneous Province ◽  
Granitic Intrusions ◽  
Isotope Evidence ◽  
County Antrim ◽  
Geochemical Studies ◽  
Basic Rocks ◽  
Highly Evolved

Abstract Geochemical data (including REE determinations) are presented for all five Mourne Mountains granites and three Northern Ireland rhyolites. These confirm (1) the extremely fractionated nature of some of the rocks (Sr and Ba < 10 ppm, Rb > 400 ppm, Eu/Eu* < 0.1, and K/Rb < 100), and (2) a major revision to the outcrops of the E. Mourne granites G1 and G2 in which much of the former is reclassified as G2. Combined petrographic and geochemical studies have also indicated that magmatic pulses were involved in the emplacement of Mourne intrusions G2 (Revised)-G5 inclusive. The N. Ireland Tertiary acid rocks exhibit general geochemical similarities to their analogues elsewhere in the British Tertiary Igneous Province (in which Sr is generally < 100 ppm and CeN/YbN generally < 8 with Eu/Eu* often < 0.6), but as a suite the Mourne granites are enriched in Rb and some other LIL elements relative to their N. Arran counterparts. The more fractionated acid magmas of NE Ireland are believed to have evolved from primitive granitic parent liquids by crystal fractionation at depth which involved major and accessory phases (including zircon and allanite). In the Mourne (and County Antrim) areas the primitive acid compositions lie at the ends of basaltic (tholeiitic) differentiation series, and in the Mourne central complex there is a complete geochemical sequence from basic rocks through intermediate members to primitive and ultimately highly evolved, subalkaline, granitic intrusions. It is concluded that the data are consistent with the Mourne granites and Northern Ireland rhyolites being essentially basaltic differentiates, although Sr isotope evidence indicates some (probably minor) crustal involvement.

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