The magnetic anomaly of a brick foundation

Bevan, Bruce W.

doi:10.1002/1099-0763(199412)1:2<93::aid-arp6140010203>3.0.co;2-l

Cited by 16 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GPR profiles show numerous small hyperbolas within the cellar that might be produced by large rocks or metal objects buried within the soil that fills the cellar (Bevan et al, 1984;Conyers, 2004). This interpretation is supported by observations of magnetic anomalies (Figure 7c; Bevan, 1994).…”

Section: Structuresupporting

confidence: 81%

Integration of shallow geophysics, archaeology and archival photographs to reveal the past buried at Ingleside Plantation, Piedmont North Carolina (USA)

Cowan

Seramur

Costa

et al. 2022

Archaeological Prospection

View full text Add to dashboard Cite

Ground penetrating radar supported by electrical resistivity tomography and gradiometer surveys were used to map buildings and infrastructure documenting sequential property use by three generations of the Jacob Forney family who began as farmers in the backcountry of North Carolina and rose to prominence in government and industry within the Southeastern United States. At Ingleside, the antebellum plantation house has been preserved, and the adjacent property remains relatively undisturbed. Context for the geophysical surveys was provided by archival photographs, written accounts including monographs and newspaper articles, and an archaeological excavation of the stone hearth within the plantation's summer kitchen.The location of an early log home with a stone-lined cellar with ties to the Piedmont Campaign of the American Revolution (in 1781) was newly discovered. In addition, a historic road, kitchen garden, and the postholes from an early post-in-the-ground building were imaged within the subsurface. The external summer kitchen and privy are associated with the plantation house constructed in 1817. Several cesspool vaults of potential privies are ingrown with trees. The results of the geophysical surveys document the evolving land use within one family in the American South and can be connected to a specific event in history, a goal of historical archaeology.

show abstract

Section: Structuresupporting

confidence: 81%

Integration of shallow geophysics, archaeology and archival photographs to reveal the past buried at Ingleside Plantation, Piedmont North Carolina (USA)

Cowan

Seramur

Costa

et al. 2022

Archaeological Prospection

View full text Add to dashboard Cite

show abstract

“…This property has made the magnetic method highly efficient in tracing architecture in dozens of surveys carried out on ancient sites in the Nile Valley (Fassbinder, 2017b ; Herbich, 2003 , 2019 ; Spencer, 2012 ). The other building material in use at Old Dongola, but to a far lesser extent, is baked brick; it is characterized by thermoremanent magnetization reaching 10 × 10 −3 SI (Bevan, 1994 ). The accumulated deposits in which these building remains are found consist mainly of sand, which can show magnetic susceptibility growing to 1.5 × 10 −3 SI due to minerals with a high content of iron oxides, but the overall magnetic contrast between the two kinds of bricks and the sandy matrix is sufficiently strong to register anomalies related to the brick structures.…”

Section: Methodology Of Geophysical Researchmentioning

confidence: 99%

Shedding light on the Sudanese Dark Ages: Geophysical research at Old Dongola, a city‐state of the Funj period (16th–19th centuries)

Obłuski

Herbich

Ryndziewicz

2021

Archaeological Prospection

View full text Add to dashboard Cite

The article presents the results of magnetic and ground‐penetrating radar (GPR) research carried out in Old Dongola in northern Sudan in 2018 and 2020, within the framework of a project designed to investigate the transition from Christianity to Islam taking place in the capital of the Nubian kingdom of Makuria. The integrated datasets from the application of two geophysical methods, of which one is the standard magnetic method used on sites in the Nile Valley and the other ground‐penetrating radar, enhanced the archaeological interpretation, focused in this case on a reconstruction of the urban layout of the 16th–18th‐century Funj settlement within the walls of the Dongola Citadel. The magnetic method, the effectiveness of which has gone unquestioned with regard to the study of silt architecture in the Nile valley, was successful in mapping the general outline of the settlement on the Citadel hill and in the quarter north of the walls. The GPR survey (450‐MHz antenna) provided a much more detailed image of the street grid and was much more effective than the magnetic method in tracing the course of mud‐brick walls in a sandy matrix containing baked brick rubble. Verification of the geophysical results through the excavation of selected parts of the Citadel not only satisfied the objectives of the archaeological project, which was to establish the overall street and building layout in the research area, but also confirmed the effectiveness of the two prospection methods applied in combination and the potential of integrated research with the use of the GPR and magnetic methods for the study of mud‐brick and baked brick architecture on settlement sites in Sudan.

show abstract

“…The intensity of magnetic enhancement is greatest when the affected materials retain their spatial relationship, such as in an in situ kiln. When fired materials are found in different orientations relative to their thermally created magnetic field (such as in a collection of fired bricks in a wall) their directions of magnetisation are dispersed and the cumulative effect can be reduced (Bevan 1994). Despite this, the incorporation of broken ceramics and bricks into the soil can result in an increased magnetic signature (Weston 2002).…”

Section: Potential Targets For Archaeological Prospection In Pngmentioning

confidence: 99%

Magnetometer surveys in archaeological research in Papua New Guinea: Keveoki 1, Gulf Province

Moffat¹,

David²,

Barker³

et al. 2021

Preprint

View full text Add to dashboard Cite

A magnetometer survey was conducted on the abandoned village site of Keveoki 1, near the Vailala River, Gulf Province, PNG. The survey, using a single sensor proton precession magnetometer, was successful in locating and defining the boundaries of areas confirmed by excavation to contain dense assemblages of pottery. The combination of geophysical and excavation results allowed a broader understanding of the spatial distribution of human occupation at Keveoki 1 than would have been possible based on excavation or visual field walking alone. We suggest this technique should be applied more regularly. Archaeological geophysical prospection techniques have not previously been applied as part of archaeological investigations in Papua New Guinea (PNG), despite an extensive history of archaeological research in this area (e.g. Bulmer 1978; Frankel and Vanderwal 1985; White and O'Connell 1982). In part, this deficiency may be explained by the perceived high cost of geophysical survey as well as the difficulties associated with operating and transporting electronic equipment to the often remote, extremely rugged, wet tropical and inaccessible archaeological sites of the region. Nevertheless geophysical techniques have a demonstrated history of making an important contribution to archaeological investigations world-wide (e.g. Witten 2006; Conyers 2004; Gaffney and Gater 2003) and have the potential to answer important archaeological questions in PNG also. In particular, they have the potential to extend site information beyond the limited spatial extent usually obtained through excavation, and thus promise to enable understandings of village sites as spatially extensive landscapes rather than more restricted spatial nodes (Kvamme 2003). This is particularly apt for PNG where thick vegetation and swampy conditions can make site discovery through more conventional field walking very difficult.The archaeological record in many coastal parts of PNG is particularly amenable to geophysical investigations because here can be found extensive sites with dense ceramic deposits as well as numerous sub-surface structural features such as postholes, human burials and earth ovens. Since electromagnetic induction (EMI) and magnetic susceptibility in particular can directly detect pottery (Clark 1990) as well as the remnants of burning (Linford and Canti 2001) and anthropogenically-induced microbial activity (Linford 2004), geophysical prospecting evidently has great potential in such archaeological contexts. Other techniques, such as ground penetrating radar (GPR) (Conyers 2004) and direct current resistivity (Witten (2006) may find less regular application in this area, but could contribute where favourable site conditions exist.

show abstract

The magnetic anomaly of a brick foundation

Cited by 16 publications

References 9 publications

Integration of shallow geophysics, archaeology and archival photographs to reveal the past buried at Ingleside Plantation, Piedmont North Carolina (USA)

Integration of shallow geophysics, archaeology and archival photographs to reveal the past buried at Ingleside Plantation, Piedmont North Carolina (USA)

Shedding light on the Sudanese Dark Ages: Geophysical research at Old Dongola, a city‐state of the Funj period (16th–19th centuries)

Magnetometer surveys in archaeological research in Papua New Guinea: Keveoki 1, Gulf Province

Contact Info

Product

Resources

About