U-Th section development

U-Th.qmd

@@ -0,0 +1,23 @@
+# U-Th
+
+## Applications {#sec-UTh-Applications}
+
+Very brief list of different applications of U-Th dating - carbonates, volcanics, etc.
+
+## History {#sec-UTh-History}
+
+Alpha-counting 1950s; TIMS 1980s; ICP-MS 1990s incl. Q-MS, ICP-SF-MS, MC-ICP-MS; LA-ICP-MS 2000s?
+
+Permil level precision w TIMS and ICP-MS; epsilon-level precision with Faraday cup protocols using larger samples and different resistors
+
+## Challenges {#sec-UTh-Challenges}
+
+Simultaneous measurement of multiple isotopes with a combination of very high and low abundance; peak-tailing from 238U and also from 232Th for samples with 'high' 232; quantifying fractionation; standards
+
+## Instrumentation Choice and Analytical Approach {#sec-UTh-AnalyticalChoices}
+
+Considerations for choice of instrumentation and analytical method
+e.g., Advantages and disadvantages for TIMS vs MC ICPMS
+FAR-FAR vs. ion counter
+types of ion counters
+

_quarto.yml

@@ -63,6 +63,7 @@ book:
       - U_Pb.qmd
       - U_Th_He.qmd
       - Re-Os.qmd
+      - U-Th.qmd
     - part: "Interpreting Data"
       chapters:
       - basic_stats_refresher.qmd

references.bib

@@ -168,4 +168,28 @@ @article{DeLaeter_2006
 	pages = {847-854},
 	doi = { 10.1002/jms.1057}
 }
-
+@article{GoldsteinStirling2003,
+    author = {Goldstein, Steven J. and Stirling, Claudine H.},
+    title = {Techniques for Measuring Uranium-series Nuclides: 1992–2002},
+    journal = {Reviews in Mineralogy and Geochemistry},
+    volume = {52},
+    number = {1},
+    pages = {23-57},
+    year = {2003},
+    month = {01},
+    issn = {1529-6466},
+    doi = {10.2113/0520023},
+    url = {https://doi.org/10.2113/0520023},
+    eprint = {https://pubs.geoscienceworld.org/msa/rimg/article-pdf/52/1/23/2941493/23.gsrmg.52.pdf},
+}
+@article{Shenetal2012,
+title = {High-precision and high-resolution carbonate 230Th dating by MC-ICP-MS with SEM protocols},
+journal = {Geochimica et Cosmochimica Acta},
+volume = {99},
+pages = {71-86},
+year = {2012},
+issn = {0016-7037},
+doi = {https://doi.org/10.1016/j.gca.2012.09.018},
+url = {https://www.sciencedirect.com/science/article/pii/S0016703712005248},
+author = {Chuan-Chou Shen and Chung-Che Wu and Hai Cheng and R. {Lawrence Edwards} and Yu-Te Hsieh and Sylvain Gallet and Ching-Chih Chang and Ting-Yong Li and Doan Dinh Lam and Akihiro Kano and Masako Hori and Christoph Spötl}
+}