Magma-assisted Continental Rifting: The Broadly Rifted Zone in SW Ethiopia, East Africa

Supporting information accompanying a paper entitled "Magma-assisted Continental Rifting: The Broadly Rifted Zone in SW Ethiopia, East Africa" submitted to AGU publications, Tectonics. The dataset contains apatite and zircon (U-Th-Sm)/He  data from the southern Main Ethiopian Rift, Gofa Province and Chew Bahir Basin, as well as additional QTQt thermal models that are discussed in the paper.

Supporting information accompanying a paper entitled "Magma-assisted Continental Rifting: The Broadly Rifted Zone in SW Ethiopia, East Africa" submitted to AGU publications, Tectonics. The dataset contains apatite and zircon (U-Th-Sm)/He data from the southern Main Ethiopian Rift, Gofa Province and Chew Bahir Basin, as well as additional QTQt thermal models that are discussed in the paper.

Table 1 and 2 contain apatite  (AHe) (U-Th-Sm)/He (Table 1) and zircon (ZHe) (U-Th-Sm)/He (Table 2) single grain ages. Sampling locations are indicated in figure 2a in the main text. Data table 1 and 2 are similar with Table 1 and 2 in the main text. 

Table 3: Show Onset of cooling estimated for each models at a specified time interval.

Supplementary information S1A and S1B show model strategy details for QTQt (S1A) and HeFTy (S1B). 

Supplementary information S2A, 2B and 2C: Show AHe single grain ages plot against effective uranium concentration (eU) and grain size (ESR) colored with grain geometry (1, 2 or 0 terminations). Single grain ages excluded for QTQt modeling are denoted as asterisk.

Supplementary information S2D: Show ZHe single grain age plot against eU and ESR.

Supplementary information S3A and 3B show all QTQt thermal modeling results for individual and elevation profile samples. The expected thermal history represents the weighted mean of all the models sampled (solid lines). For elevation profile samples, thermal history for the topmost and lowermost samples plotted in blue and red, respectively. For all models, the 95% confidence interval drawn as stippled lines.  For elevation profile samples, thermal histories for samples in between the top and lower are drawn in gray. 

Supplementary information 3C: Shows individual HeFTy inverse and forward modeling results. Excluded single grain ages are denoted as transparent. Accepted thermal histories are indicated as green and the ''good'' fits are light purple. The orange boxes are time-temperature constraints.

本配套数据集源自投稿至美国地球物理学会（American Geophysical Union，AGU）旗下《构造学》（Tectonics）期刊的论文《岩浆辅助大陆裂谷作用：东非埃塞俄比亚西南部宽裂谷带》（Magma-assisted Continental Rifting: The Broadly Rifted Zone in SW Ethiopia, East Africa）。数据集涵盖埃塞俄比亚主裂谷南部、戈法省（Gofa Province）以及乔巴赫尔盆地（Chew Bahir Basin）的磷灰石与锆石（U-Th-Sm）/He热年代学数据，同时包含论文中讨论的额外QTQt热演化模型。
本配套数据集源自投稿至美国地球物理学会（American Geophysical Union，AGU）旗下《构造学》（Tectonics）期刊的论文《岩浆辅助大陆裂谷作用：东非埃塞俄比亚西南部宽裂谷带》（Magma-assisted Continental Rifting: The Broadly Rifted Zone in SW Ethiopia, East Africa）。数据集涵盖埃塞俄比亚主裂谷南部、戈法省（Gofa Province）以及乔巴赫尔盆地（Chew Bahir Basin）的磷灰石与锆石（U-Th-Sm）/He热年代学数据，同时包含论文中讨论的额外QTQt热演化模型。
表1与表2分别收录磷灰石（AHe）（U-Th-Sm）/He单颗粒年龄数据（表1）以及锆石（ZHe）（U-Th-Sm）/He单颗粒年龄数据（表2）。采样点位标注于正文图2a中。本数据集的表1、表2与正文中的表1、表2内容一致。
表3：展示各模型在指定时间间隔下估算的冷却起始时刻。
补充材料S1A与S1B分别展示QTQt（S1A）与HeFTy（S1B）的建模流程细节。
补充材料S2A、S2B与S2C：展示以颗粒几何特征（1、2或0个终止面）着色的磷灰石单颗粒年龄与有效铀浓度（eU）、颗粒尺寸（ESR）的相关性散点图。用于QTQt建模时被剔除的单颗粒年龄以星号标记。
补充材料S2D：展示锆石单颗粒年龄与eU、ESR的相关性散点图。
补充材料S3A与S3B展示了单个样品与高程剖面样品的全部QTQt热演化模拟结果。模拟得到的期望热历史为所有采样模型的加权平均值（以实线表示）。对于高程剖面样品，最顶部与最底部样品的热历史分别以蓝色与红色绘制。所有模型的95%置信区间均以虚线表示。对于高程剖面样品，位于顶部与底部之间的样品热历史以灰色绘制。
补充材料3C：展示HeFTy的单颗粒反演与正演模拟结果。被剔除的单颗粒年龄以透明样式标记。被接受的热历史以绿色表示，拟合效果良好的结果以浅紫色表示。橙色方框代表时间-温度约束条件。