Print

Print


Hi Megan,

We write a paper on low temperature monazite geochronology in sandstone, temperature probably around 250C. We don’t have direct temperature estimate, but we bracketed it with data from surrounding terranes and from fluid inclusions.

Attached is the paper and the supplementary data containing the monazite geochemistry. Watch out, all the cores are inherited, and so it’s PT of formation are unknown.

Cheers,

Julien


On 8 Nov 2018, at 02:42, Megan Alice Williams <[log in to unmask]<mailto:[log in to unmask]>> wrote:

Dear All,

I am putting together a database of monazite chemistry from the published literature and am looking for datasets with the following essential characteristics:
1.       Natural metamorphic monazite analyses (EPMA)
2.       Analyses containing Th, Si and Ca

3.       Each analysis paired to either a grain temperature (e.g. Y-in-monazite), or a whole rock temperature (conventional thermobarometry or phase diagrams). This can also be a temperature that is extrapolated from other samples in a terrane.

The following additional pieces of information would be useful, but are not essential:
4.       Pressure conditions (grain or whole rock)
5.       Whole rock composition for the sample, in particular including P, Ca, Al, Ce, Th, Y

6.       The microstructural location of the grains.

I would highly appreciate any contributions of datasets that fit the above criteria, or direction to where published versions of the full datasets can be found. I have a particular paucity of data from low temperature (<550 •C) and high temperature (>850 •C).

Many thanks in advance,

Best regards,

Megan Williams

PhD Candidate
Impact of melt loss on monazite and Th behaviour in Earth’s crust: applications to geochronology and crustal heat production
Department of Earth Sciences
School of Physical Sciences
The University of Adelaide, AUSTRALIA 5005
e-mail: [log in to unmask]<mailto:[log in to unmask]>

CRICOS Provider Number 00123M
-----------------------------------------------------------
This email message is intended only for the addressee(s)
and contains information which may be confidential and/or
copyright.  If you are not the intended recipient please
do not read, save, forward, disclose, or copy the contents
of this email. If this email has been sent to you in error,
please notify the sender by reply email and delete this
email and any copies or links to this email completely and
immediately from your system.  No representation is made
that this email is free of viruses.  Virus scanning is
recommended and is the responsibility of the recipient


________________________________

To unsubscribe from the GEO-METAMORPHISM list, click the following link:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=GEO-METAMORPHISM&A=1


########################################################################

To unsubscribe from the GEO-METAMORPHISM list, click the following link:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=GEO-METAMORPHISM&A=1