The full programme book (PDF) - Royal Geographical Society

More documents

Recommendations

Info

Figure 1: BRITICE-CHRONO is focusing on eight transects mostly running from the shelf-break to some tens of kms onshore. The transects are illustrated here overlaid on a pattern of marginal retreat.
T2 Tracing and constraining key tephras between 29.2 – 11.1 ka b2k within the NEEM, NGRIP and GRIP ice core records Eliza Cook* 1 , S.M. Davies 1 , P.M. Abbott 1 , A.J, Bourne 1 , M. Bigler 2 , I.K. Seirstad 3 , A. Svensson 3 , S.O. Rasmussen 3 , J.P. Steffensen 3 1 Department of Geography, College of Science, Swansea University, Swansea 2 Physics Institute, Climate and Environmental Physics and Oeschger Centre for Climate Change Research, University of Bern, Sidlerstrasse 5, CH-3012, Bern, Switzerland 3 Ice and Climate group, Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen, Denmark This project aims to improve the European tephrochronological framework for the last glacial-interglacial transition (LGIT) between 29.2 and 11.10 ka b2k through the identification and characterisation of tephra layers within the NEEM, NGRIP and GRIP icecore records from Greenland. Prior to this study, just 16 tephra horizons had been identified within this interval in Greenland. Here we outline the discovery of a further 64 new tephra horizons in the 3 deep ice-cores from Greenland, with 23 identified in NEEM, 24 in GRIP and 17 in NGRIP. Iceland is the dominant source of tephra, although one horizon is far travelled and represents the first Kamchatka-Kurile island arc tephra to be identified in Greenland ice. Tephras are identified in the ice by adoption of a new low-resolution screening approach for NEEM via the continuous flow analysis system (CFA). A high-resolution sampling strategy was devised based on the results of the former and was successful in identifying many previously unknown tephra horizons at a 3-20cm resolution. Horizons found in NEEM were then traced in GRIP and NGRIP. The key highlights of this work include: 1. 20 new tie-points have been established between GRIP and NGRIP between GS-2 and GS-5. 2. 9 tie-points have been established between NEEM and either NGRIP or GRIP. These include the Vedde ash (12,171 ± 57 yr b2k), a NGRIP Katla horizon that falls within GS-5 and dated to 29,130 ± 456 yr b2k, a basaltic horizon within the cold GI-1d episode and three isochrons in the poorly resolved GS-2b/a interval, promoting confident matching and timescale transfer between cores. 3. A dacitic horizon detected in NEEM during GS-3 has a potential Kamchatka- Kurile island provenance; providing an opportunity to examine synchronicity of North Atlantic/North West Pacific climate records during the glacial maximum. 4. Two Borrobol-Penifiler type horizons have been found in GRIP and one in NGRIP, during GI-1e. The discovery of new inter-core tie points provides a test of the matching/synchronisation approach used for the transferral of the GICC05 timescale from NGRIP to other Greenland ice-cores as well as providing individual timescale transfer points e.g. Rasmussen et al., 2013. Ongoing geochemical analysis will focus on extending these tephra isochrons to terrestrial and marine sequences. KEYWORDS: tephra horizons; isochrons; Greenland ice-cores; Iceland; last glacialinterglacial transition
Page 1:
QRA@50: Quaternary Revolutions QRA
Page 6 and 7:
Conference Programme Wednesday 8th
Page 8 and 9:
General Notes Exhibitors A small nu
Page 10 and 11:
QRA50: Top 50 UK Quaternary Sites N
Page 12 and 13:
THEME 1: CAUSES OF CLIMATE CHANGE C
Page 14 and 15:
THEME 2: MEASURING TIME Radiocarbon
Page 16 and 17:
THEME 3: MEASURING AND UNDERSTANDIN
Page 18 and 19: THEME 4: MODELLING THE EARTH SYSTEM
Page 20 and 21: modeling context, or in the context
Page 22 and 23: THEME 5: ICE SHEET DYNAMICS Time, t
Page 24 and 25: THEME 7: THE OCEANS The Oceans, CO
Page 26 and 27: THEME 8: TERRESTRIAL STRATIGRAPHY A
Page 28 and 29: THEME 9: PALAEOECOLOGY Conservation
Page 30 and 31: THEME 9: PALAEOECOLOGY Beetles, bon
Page 32 and 33: THEME 10: HUMAN ORIGINS, ENVIRONMEN
Page 34 and 35: THEME 11: INSIGHTS FROM GENETICS In
Page 36: Van Walt m onitoring your needs Del
Page 41 and 42: T2 TRACEing Tephra Horizons in Nort
Page 43 and 44: T5 The Hebrides Ice Stream (HIS) an
Page 45 and 46: T9 Formation and Cultural Use of We
Page 47 and 48: T3 Glacier-based climate reconstruc
Page 49 and 50: T5 Reconstructing the maximum exten
Page 51 and 52: T6 First recorded evidence of subaq
Page 53 and 54: T2 Towards a Greenland tephra latti
Page 55 and 56: T5 BRITICE-CHRONO Transect 8: const
Page 57 and 58: T8 Pleistocene landscape change at
Page 59 and 60: T10 Advances in geoconservation: fu
Page 61 and 62: T7 ARAMACC: Advancing the use of an
Page 67: T5 BRITICE-CHRONO: Constraining rat
Page 71 and 72: T2 Testing the potential of OSL to
Page 73 and 74: T5 Reconstruction of ice-sheet chan
Page 75 and 76: T3 Spatial and temporal variability
Page 77 and 78: T5 Glacial geomorphology of the Inn
Page 79 and 80: T2 Revolution and evolution: 35 yea
Page 81 and 82: T5 BRITICE-CHRONO, Transect 2: cons
Page 83 and 84: T2 Improving surface exposure ages
Page 85 and 86: T5 Geomorphology and dynamics of th
Page 87 and 88: T9 The Anthropogenic Element in the
Page 89 and 90: Fraser, W.T., Watson, J.S., Sephton
Page 91 and 92: T10 Human-environment-climate inter
Page 93 and 94: T9 Island Evolution: a ‘front-lin
Page 95 and 96: T5 Modelling the water isotope resp
Page 97 and 98: T9 Biome dynamics in the Ohrid Basi
Page 99 and 100: T5 The Moffatdale RSF cluster, Sout
Page 101 and 102: T11 Combining palynology and ecolog
Page 103 and 104: Figure 1: The palm swamp forest at
Page 105 and 106: T3 SCOPSCO Lake Ohrid deep drilling
Page 107 and 108: δ 18 Odiatom); biomarkers; pollen;
Page 109 and 110: T3 Quaternary revelations: the role
Page 111 and 112: T8 Late-Middle to Late Pleistocene
Page 113 and 114: T9 Climate forcing of mammoth range
Page 115 and 116: T8 Svalbard surging glacier landsys
Page 117 and 118: T2 Constraining peatland environmen
Page 119 and 120:
T9 Late - glacial/Holocene vegetati
Page 121 and 122:
T10 Developing a Holocene tephrostr
Page 123 and 124:
Roberts, S. J. (1997) The spatial e
Page 125 and 126:
T7 Pleistocene sea-surface and inte
Page 127 and 128:
T10 Man, Megafauna and Mycobacteria
Page 129 and 130:
T5 BRITICE-CHRONO Transect 5: const
Page 131 and 132:
T8 The “Four Ages” of Micromorp
Page 133 and 134:
T3 Continental silicon cycling and
Page 135 and 136:
T5 Reconstructing plateau icefields
Page 137 and 138:
T3 Exploiting multi-proxy analysis
Page 139 and 140:
T3 Tipping Points: Rapid Neo-glacia
Page 141 and 142:
T5 Glacial history of the central n
Page 143 and 144:
T8 Reconstructing Quaternary Rhine-
Page 145 and 146:
T9 When was Europe deforested? Larg
Page 147 and 148:
T9 Long-term vegetation development
Page 149 and 150:
T9 Climate, microtopography and per
Page 151 and 152:
T3 The temperature-δ 18 O relation
Page 153 and 154:
T10 Neolithic land-use change clima
Page 155 and 156:
T5 Assessing existing dating constr
Page 157 and 158:
T10 Assessing the effects of the '2
Page 159 and 160:
Figure 1: Lake ‘Disko 2’ on Dis
Page 161 and 162:
T5 Increased channelization of subg
Page 163 and 164:
T7 Holocene controls on silicic aci
Page 165 and 166:
T8 Tanera Mor: a new stratotype for
Page 167 and 168:
T8 Landscape response to abrupt cli
Page 169 and 170:
T9 Impact of vegetation shifts on i
Page 171 and 172:
T9 Assessing seasonality changes du
Page 173 and 174:
T2 Cryptotephra records as archives
Page 175 and 176:
Westaway, R., Bridgland, D.R., Mish
Page 177 and 178:
T3 Songs from the wood: tales of th
Page 179:
T9 Lateglacial and Holocene Climate
show all

The full programme book (PDF) - Royal Geographical Society

Create successful ePaper yourself

Delete template?

Save as template?