The term "hanging wall" originated long ago (before 1500 CE) in association with mining in Cornwall. A similar terms was used in German.
In this sense, it referred to an planar ore body that was "hanging" above shaft. Commonly the ore bodies were associated with "normal faults", which were the prevalent (aka "normal") type of fault in the Cornwall area.
I can see, like you did, that this term "stratigraphic hanging wall" has some usage. Perhaps the usage is related to ore geology, as suggested in the last message.
Best,
Mark
On Apr 4, 2014, at 9:19 AM, Pietari Skyttä <[log in to unmask]> wrote:
> Hi,
>
> Maybe it just refers to the stratigraphic position with respect to the observed/discussed unit or layer, similar to the usage in ore geology.
>
> Regards,
> Pietari
>
>
> Quoting Alex Brett <[log in to unmask]>:
>
>> I would expect this to be describing "fossil" faults - no longer active but present in e.g. overturned sequences as a dislocation. Then "stratigraphic hanging wall" would be the hanging wall in the sense of the original stratigraphy, as opposed to in terms of the current orientation of the sequence.
>>
>> Does that fit with the usages you've seen?
>>
>> Cheers
>> -a.
>>
>> On 04/04/2014 08:06, Riia Chmielowski wrote:
>>> Greetings,
>>>
>>> Can anyone clarify for me what is meant by the term "stratigraphic hangingwall"? A quick google search reveals many instances where the phrase is used, but I can't find a definition anywhere. The term looks odd to my eye, since I was taught that stratigraphy refers to the order in which a sequence of rocks (especially sedimentary) was deposited, and that a hangingwall is the set of rocks located above a given fault (e.g. those hanging overhead if one stands in a mine located along along the fault plane). Given those definitions I am at a loss as to what exactly is meant when the one is used as a modifier for the other.
>>>
>>> Thanks,
>>>
>>> --Riia
>>>
>>> ******************************************************
>>> Riia M. Chmielowski
>>> Assistant Lecturer, LTU
>>> Email: [log in to unmask]
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>>>
>>> Postal address:
>>> Luleå University of Technology
>>> Department of Civil, Environmental and Natural Resources Engineering
>>> Division of Geosciences
>>> Riia M. Chmielowski
>>> SE-971 87 Luleå Sweden
>>> ******************************************************
>>>
>
>
>
> Pietari Skyttä, PhD
> _________________________________________
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> Department of Geosciences and Geography
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