We started the season by extending the trench 3m on the south-east-side and 5m on the north-west side with the help of a JCB and its lovely driver, Martin. The main reasons behind this were to find the extent of our large early Bronze Age burnt mound, and to identify any associated archaeology lying on the periphery of the mound itself. Almost as soon as we stopped excavating with the machine we found a large rim sherd of mid-Bronze Age cord-impressed pottery in the northern extension of the trench. When this area was cleaned further, more sherds of the same pot were found and we were able to fit the pieces together, giving us an idea of its original shape and size see earlier blog post for more details here. Also identified upon the opening of the northern extension were the articulated remains of a sheep sitting within a sub-circular but poorly defined pit. Due to its position cutting through a system of alluvial silts covering the burnt mound, it is relatively modern, but still provided our students with the opportunity to excavate articulated remains, which is a bit of a rarity at the Bradford Kaims. Bone expert Tom Fox cleaning up the post-Medieval sheep in Trench 6. In the centre of Trench 6, our investigation was focussed on a complex sequence of post holes and pits just north-east of our wooden trough, which make up a variety of structures and associated burnt features which interface directly with several burnt mound deposits. What we thought would take a few days to bottom and sample turned into weeks of work and recording, due to the many cuts and recuts found in the feature, alongside heavy rain in the middle of our season.
Prof. David Sanderson
It was generally believed that a well organized civilization could not have existed prior to BP. Many were reluctant to accept that the flood myths mentioned in many ancient religious writings held some grains of truth. The recent discovery made in the Gulf of Cambay, India shocked many, and made some sit up and watch with interest. It clearly established the existence of an ancient civilization that was submerged in the sea.
Although a relatively new technique, particularly in subaqueous sediments, StrataData have pioneered its industrial application in dating superficial seabed deposits for geohazard risk assessment. Application Suitable for samples up to about Ka containing quartz. The quartz can be very fine grained c. Ideal for young sediments with no biogenic material present or where the age of the sediments exceeds the range of 14C dating c.
Requires precise measurement of sample water content and salinity. The report will contain OSL results calibrated for sample water content and salinity. Turnaround time is several weeks to several months and very dependent on the time taken to prepare the samples, with organic rich samples taking the longest. Please contact us for more information.
Technical Information Method All sediments contain trace minerals including uranium, thorium and potassium. These slowly decay over time and the ionising radiation they produce is absorbed by other constituents of the sediments such as quartz and feldspar. Stimulating samples using infrared light causes luminescence, the intensity of which varies depending on the amount of radiation absorbed. Exposure to sunlight resets the luminescent signature and so the time period since the sediment was buried can be calculated.
Doctoral thesis, Durham University. Preview 16Mb Abstract Essex is a county rich in significant historic brickwork spanning the medieval period. A great deal of earlier archaeological study has focused on the development and use of brick during this period, providing a framework of understanding as to how this material was employed in Essex through the medieval period.
Lab supervisor and technition, Durham Luminescence Research Laboratory, Department of Archaeology. OSL dating of quartz from sediments, ceramics and brick Lithic Specialist.
Godthelp in Hill, Robert S. White, , The Nature of Hidden Worlds: Australian Conservation Foundation, Melbourne. Michael Archer, Suzanne J. Gehling, Kathleen Grey, Guy M. Franklin, The revolution that didn’t arrive: Aboriginal History 9, Frith, Cape York Peninsula: A Natural History, Reed, D. Hobbs and Colin J.
Special Issue “Special External Effects on Fluvial System Evolution”
Jack Rink about a new technique that he using to determine the age of the Crystal River archaeological site. He began his education in Florida where he received his Ph. After working on projects in Africa, Europe and Asia, Dr. Rink returned to Florida several years ago to work on the Salt Springs site near Palatka.
Luminescence dating refers to a group of methods of determining how long ago mineral grains were last exposed to sunlight or sufficient heating. It is useful to geologists and archaeologists who want to know when such an event occurred. It uses various methods to stimulate and measure luminescence.. It includes techniques such as optically stimulated luminescence (OSL), infrared stimulated.
Coarse quartz grains, extracted from sediment samples taken from excavated sections of several mounds, possessed sufficiently strong OSL to enable an evaluation of equivalent dose by applying the single aliquot regenerative procedure to small aliquots, each containing an individual bright grain. The OSL dates for both palaeosol and overlying upcast indicate that a chronostratigraphic record has been preserved within the mounds investigated, and micromorphological analysis of thin sections of sediment blocks taken from the mounds is shown to provide an essential means of verifying the characteristics of the strata, in particular, the critical interface of upcast and the ancient ground surface.
The earliest OSL dates for basal deposits taken from two separate sections of the same mound are in agreement, placing the mound construction during the first half of the 13th century A. However, in two other mounds the OSL dates for the deposition of upcast are internally consistent with the stratigraphy but significantly later, dating to the 16th and 17th centuries A. We interpret the differences between the dates for the upcast deposition to be the result of partial erosion of the upper shaft and later repair of the mounds, and this finding underlines the importance of both examining multiple mounds in the same qanat system and the internal structure of each sampled mound.
This exploratory work demonstrates the potential for wider application of OSL for dating this important type of subterranean irrigation feature in the study of both the archaeology of human settlement and palaeoenvironmental change in arid regions.
The York Research Database
Recent publications Pope, R. Examples from the Sparta Basin, Lakonia, southern Greece. Earth Surface Processes and Landforms 25, International Journal of Geoarchaeology 18, Alluvial Archaeology in Europe, pp. Interactions between alluvial fan systems and axial drainage systems:
Method Luminescence dating of brick stupas Figure 3. A section of the base of the focal element of the stupa at Thalaguru showing (a) the brick extracted to allow a fragment (b) from the inner section of the brick to be removed for OSL measurements ().
This phone dose is then related to the dose deposited in the individual, DB, using conversion factors that take account of the geometry of the exposure and the location of the phone relative to the individual during it 4. Finally, DB is reported to medical professionals to aid triage of the exposed individual. In principle, the dosimetry system is relatively straightforward.
In practice, however, operating an emergency service that is reliant on mobile phones carries a number of complications, which may be of varying physical, biophysical or logistical origin. Some of these are highlighted in the following sections. When sufficient staff are trained, it is anticipated that continuous operation of the system will be feasible, with three 4-person, 8-h shifts per day allowing PHE to process up to phones per week.
If a larger-scale emergency were to occur, then the RENEB 2 network would be used to increase throughput.
Gulf of Cambay: Cradle of Ancient Civilization
Further survey of the same terraces, looking for Palaeolithic evidence, particularly artefacts in situ in cemented gravels, proved moderately successful. Small artefact collections maximum four pieces were recovered from a number of lower and medium height terrace gravels stretching from the Arjun terrace up to and including the Bwayda al-Sharqiyya terrace. Photographs of artefacts lying in situ were taken. The collections consist largely of cortical and non-cortical flakes, along with a number of amorphous cores.
Prof. David R. Bridgland, Durham University Key Words 1. OSL dating 2. Pleistocene 3. Gravels 4. Fluvial 5. Coastal Overview Luminescence (especially optically stimulated luminescence – OSL) dating is an established and important tool for dating events during the Late Pleistocene and latter part of the Middle Pleistocene (Rhodes, ).
It lies directly on Magnesian Limestone bedrock at 33 m O. Detailed sedimentological analysis suggests that it is an interglacial beach, which is supported by the presence of pebbles bored by marine organisms and littoral, temperate-climate, marine macro- and micro-fossils. It comprises beds of unconsolidated, bedded, imbricated, well-rounded sands and gravels, overlain by similar, but calcreted, deposits.
The gravel fraction is dominated by Magnesian and Carboniferous limestone, with orthoquartzite, flint, and porphyries also present; these are far-travelled erratics that must have derived from the erosion of older glacially transported sediments. Previous workers have described erratics derived from the Oslofjord region of Norway in the raised beach gravel, although rocks diagnostic of a Scandinavian origin have not been recovered as part of this study. The heavy-mineral Suite is rich in epidote, dolomite, clinopyroxenes, garnet, tourmaline, and micas.
The beach was dated previously by conventional amino acid analysis of the shells, which suggested a Marine Isotope Stage MIS 7 age, albeit with a reworked component from MIS 9. This has been confirmed by new optically stimulated luminescence OSL dates, which indicate that the beach formed between and ka BP. New amino acid racemisation analyses, using a modified technique, broadly support this interpretation but Must await more comparative data before they can be assessed fully.
Gulf of Cambay Cradle of Ancient Civilization
Within the frame of the Pygmalion project ANR Blanc, France we measured the concentration in miliacin of about sediment samples extracted from two cores drilled in Lake le Bourget in order to reach an infra-decadal resolution for the BC time period that covers the Bronze Age. Miliacin concentration is low ca. In addition to this general trend, miliacin concentration shows century-scale variations in the BC interval that are comparable in both cores and coincide with other data.
Before collecting OSL samples, please read and follow the guides below. Guide to OSL Sample Collection (pdf) OSL Sampling Do’s and Don’ts Guide (pdf) Nelson et al. User Guide for Luminescence Sampling (pdf) HOW TO TAKE A SAMPLE FOR LUMINESCENCE DATING.
Non-digital Archive and Publications The main academic output of the project s is the following monograph: Dungeness and Romney Marsh: Barrier Dynamics and Marshland Evolution. Coastal resilience and late Holocene tidal inlet history: Driving mechanisms of coastal change: Marine Geology, , Reconstruction of Holocene foreland progradation using optically stimulated luminescence OSL dating: